SAT Linear Functions Practice Test — 10 Questions
A full SAT-style Linear Functions practice test with 10 questions at varying difficulty levels. Answer every question, get instant feedback, and review detailed explanations to understand exactly where you went wrong.
What to Expect on This Practice Test
Difficulty Mix
5 Easy · 3 Medium · 2 Hard — matching the real SAT distribution.
Instant Feedback
Know immediately if you're right. Read a detailed explanation after every answer.
Topic Covered
Linear Functions — a key topic in the Algebra section of SAT Math.
SAT Linear Functions Practice Test
10 QuestionsWhich of the following represents a linear function?
For the function f(x) = 3x - 4, what is f(5)?
A linear function passes through (0, 3) and has a slope of 2. What is the equation?
If f(x) = -x + 6, what is f(-2)?
What is the y-intercept of the linear function y = 5x - 7?
A taxi company charges a flat fee of 1.75 per mile. Which linear function represents the total cost C for m miles?
The function f(x) = 4x + k passes through the point (3, 17). What is k?
A phone plan costs 0.10 per text message. Another plan costs $40 per month with unlimited texts. At how many texts per month do the plans cost the same?
A linear function f satisfies f(2) = 7 and f(6) = 19. Which of the following is f(x)?
A water tank contains 500 gallons and is draining at a constant rate. After 3 hours, it contains 320 gallons. After how many total hours will the tank be empty?
How to Improve Your SAT Linear Functions Score
Identify your specific error pattern on this topic
After completing this practice test, look at every wrong answer and ask: 'Was this a content gap, a misread, or a careless error?' Each type has a different fix. Content gaps require review. Misreads require slowing down. Careless errors require double-checking.
Review every explanation, even correct answers
Understanding why an answer is right is as important as getting it right. Many students get lucky on questions they don't fully understand — those will come back to haunt them on test day.
Practice under time pressure
SAT Math questions should take about 1.2–1.5 minutes each. Once you understand the Linear Functions concepts, practice with a timer. Speed comes from pattern recognition, which comes from repetition.
Drill Linear Functions questions until they feel automatic
Use Blitzsat's question bank to filter specifically for Linear Functions questions at medium and hard difficulty. Repeat until you can answer most questions in under 60 seconds.
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