1. Solve for x: 3x + 5 = 20
Subtract 5 from both sides, then divide 15 by 3.
Algebra Essentials
Equations, variables, functions, and fast review for common algebra checks.
Study Overview
Equations, variables, functions, and fast review for common algebra checks. This page gives students a readable study-post version of the material while the interactive QuizLuck app provides practice, saved review, and progress tracking.
Practice Questions
2. What is the slope of y = -2x + 9?
In slope-intercept form y = mx + b, m is the slope.
3. If f(x)=x²-4, what is f(3)?
Substitute 3 for x: 3 squared minus 4 equals 5.