Guide to SAT Math Heart of Algebra + Practice Questions
What’s Covered:
- Overview of SAT Math Heart of Algebra
- How Will the SAT Impact My College Chances?
- Strategies to Solve Heart of Algebra Problems
- 10 Difficult Heart of Algebra Questions
- Final Tips and Strategies
The Heart of Algebra questions make up a third of the SAT Math section. If you’re looking to improve your score or even aiming for a perfect 800, here are some strategies and tough questions to test your skills.
Overview of SAT Math Heart of Algebra
The SAT Math section is scored out of 800 and constitutes half of the total SAT score. There are three main categories: Heart of Algebra, Problem Solving and Data Analysis, and Passport to Advanced Math. When you take the SAT, you’ll receive a subscore out of 15 for each of these categories.
Here is the breakdown of each section:
- Heart of Algebra: 33%
- Problem Solving and Data Analysis: 29%
- Passport to Advanced Math: 28%
The remaining 10% falls under Additional Topics in Math, which contains a wide array of topics.
The Heart of Algebra section focuses on linear equations, inequalities, graphs, and systems. These questions range from simple calculations to more complex word problems.
Heart of Algebra questions require that students:
- Create, solve, or interpret a linear expression or equation in one variable.
- Create, solve, or interpret linear inequalities in one variable.
- Build a linear function that models a linear relationship between two quantities.
- Create, solve, and interpret systems of linear inequalities in two variables.
- Create, solve, and interpret systems of two linear equations in two variables.
- Algebraically solve linear equations (or inequalities) in one variable.
- Algebraically solve systems of two linear equations in two variables.
- Interpret the variables and constants in expressions for linear functions within the context presented.
- Understand connections between algebraic and graphical representations.
In this post, we will explore general strategies to solving Heart of Algebra Problems and cover some of the more difficult problems that you may encounter on the SAT.
How Will the SAT Impact My College Chances?
Selective colleges often use a metric called the Academic Index (AI) to determine an applicant’s strength. Your AI is calculated based on your GPA and SAT/ACT scores, so having a strong academic profile is key to increasing your chances of admission. In fact, if your AI is too low, a college may reject you automatically. If it’s high enough, your application should at least get read.
To assess the impact of your SAT score on your chances, CollegeVine has created a free Admissions Chances Calculator. This tool will let you know how competitive your score is and will even offer tips on how to improve the rest of your profile!
Strategies to Solve Heart of Algebra Problems
Though Heart of Algebra problems appear in many different shapes and forms, the basic strategy to solve them is relatively the same from question to question. In general, when taking the SAT math section, remember to skip problems that seem too difficult or that may take too long to answer. Since all questions are weighted the same, answering many easy questions is more beneficial than answering one difficult question.
For Heart of Algebra problems specifically, since they center on linear equations, start by underlining or circling relevant information (i.e. any quantities, variables, or relationships that are defined). Then, make sure you understand what the question is asking. Begin by defining variables, then if an equation is not already given to you, construct as many equations as you can, based on the information given.
Once your equations are established, use them to solve for what the question initially asked. After solving each problem, make sure to check back and ensure you actually answered the question, or even double check your calculations if you have the time.
10 Difficult Heart of Algebra Questions
Here are some sample Heart of Algebra questions which are on the more difficult side, along with a detailed description of how to solve them.
1. System of Inequalities (No Calculator, Multiple Choice)
Correct Answer: B
For multiple choice problems, looking at the answer choices can be helpful in determining how to solve the problem. For this question, the answer choices show us that the question is looking for a system of inequalities. So, when reading the question, let’s pay close attention to any relationships between quantities. The last sentence of the problem defines variables for us:
The first sentence says “at least 10 staff members” should be hired. The term “at least” mathematically translates to “greater than or equal to.” So, we have that the total number of directors (which is the number of junior directors and the number of senior directors) must be greater than or equal to 10:
To choose between B and C, we can save time by noticing that one difference is whether
2. Constructing Linear Equations (No Calculator, Multiple Choice)
Correct Answer: C
A lot of information is given in this equation, so our first instinct should be to try to relate that information. We know that the initial value of the equipment is $32,400 and that every year it depreciates some (unknown) amount. We are also given that at 12 years, the value is $0.
If we were to relate value with time, we’d have that
Now, we can use more information to determine
We must make sure that we actually answer the question, which asks for the value 4 years after it was purchased. If we plug

3. Geometric Application of Linear Inequalities (No Calculator, Multiple Choice)
Correct Answer: A
Again, looking at the answer choices indicates we will be dealing with equalities. Let’s see what information we can extract from the problem. Note that we are dealing with rectangular prisms, so you should have any relevant formulas on hand. The first constraint is that “the sum of the perimeter of the base of the box and the height of the box cannot exceed 130 inches.” This translates to
Next, since the “perimeter of the base is determined using the width and length of the box,” and we know the base is a rectangle since we’re dealing with a rectangular prism, we have that
Substituting this new equation into our first one, we get:
4. Word Problems Involving Linear Equations (No Calculator, Multiple Choice)
Correct Answer: C
This problem also contains a lot of numeric information, so we should handle it one line at a time. First, we know that Ken earned $8 per hour for 10 hours of work. This means that Ken has already earned $80 dollars this week. Since Ken will now earn $10 for each additional hour of work, his total earnings for the week will be
Since Ken saves 90% of these earnings, we have that his savings are:
5. Properties of Linear Graphs (No Calculator, Free Response)
Correct Answer: 8
This problem requires knowledge of linear graphs, specifically the formula of a line and how to find a linear slope.
From any two points
So far, we have the equation
Now, we can pick one of the existing points on the line and plug in the values to find
6. Solving for Quantities within a Linear Equation (Calculator, Multiple Choice)
Correct Answer: A
This problem can seem complicated, because having multiple variables might tempt students to solve for one at a time. However, the key to solving this problem is treating
We can do this by factoring out 9:
We can choose A as the answer.
7. Real-World Applications of Linear Equations (Calculator, Multiple Choice)
Correct Answer: A
This problem may seem daunting given the length of the paragraph, but if we carefully read, we can see that the answer is more simple. The problem asks for what the y-intercept means. From our knowledge that the y-intercept occurs when
8. Analyzing Linear Graphs (Calculator, Multiple Choice)
Correct Answer: C
For this problem, I’d start by doing something familiar: finding the equation of the line. Since the line passes through
So far, we have
Next, we can use this slope and the point
So, for a point
9. Constructing Multivariable Linear Equations (Calculator, Multiple Choice)
Correct Answer: B
This question is a bit more complicated since it involves multiple variables. Again, the problem defines the variables for us. For a given food, the amount of calories is
Since we were told the granola bar had 180 food calories, we can set our expression equal to this value:
10. Creating and Solving a Linear System (Calculator, Free Response)
Correct Answer: 30
This situation may not seem like a linear system, since so little numeric information is given, but upon taking a closer look, we can extract additional information. First, let’s define
Next, the score is determined by “subtracting the number of incorrect answers from twice the number of correct answers.” So, the score is
Since we are given that 40 questions were answered and the score is 50, we now have two equations:
We can solve this system by adding the two equations together:
We should make sure that the question was indeed asking for the number of correct answers (not the number of incorrect ones), and since it was, we are done.
Final Tips and Strategies
When approaching Heart of Algebra problems, remember to check to make sure you answered the question. The SAT will often anticipate common student errors and misconceptions and will construct the wrong answer choices based on them. So, it’s crucial that you make sure to answer the questions carefully, double checking your work if you have the time.
The best way to study for the SAT Math section is to complete as many practice problems as you can. If you find yourself struggling on Heart of Algebra problems more than the other sections, try focusing your study solely on Heart of Algebra content.
Check out some of these other posts to help you as you study for the SAT Math section: