MathLab with Mr. Ahmed

MathLab with Mr. Ahmed is a math learning website by Ahmed Amasha, a mathematics teacher teaching the American curriculum. Explore Algebra 2, Precalculus, Calculus, and SAT and PSAT Math Prep through lessons, focused practice and printable resources.

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Linear functions

Question 1 of 3

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The function ff is defined by f(x)=2x+1f(x) = 2x + 1. What is the value of f(3)f(3)?
Worked example
Substitute 33 for xx: f(3)=2(3)+1=7f(3) = 2(3) + 1 = 7.
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The function ff is defined by f(x)=3x+1f(x) = 3x + 1. What is the value of f(−2)f(-2)?