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MathGrade 7-9

Linear Functions Answer Key

Explore linear functions by changing slope and y-intercept and observing effects on graphs.

Looking for Linear Functions answers? This complete answer key provides verified solutions for all student exploration activities and assessment questions in the ExploreLearning Linear Functions Gizmo.

100% Free • Step-by-step explanations • Perfect for homework help • Covers all activities • Updated for 2026

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Prior Knowledge Questions

Q1.What is the slope-intercept form of a linear equation?

Answer

y = mx + b, where m is the slope and b is the y-intercept.

Q2.What does the slope of a line represent?

Answer

Slope represents the rate of change — how much y changes for every 1 unit increase in x (rise over run).

Q3.What is the y-intercept?

Answer

The y-intercept is the point where the line crosses the y-axis (when x = 0).

Activity A – Slope and Intercept

Q4.What happens to the graph when you increase the slope?

Q5.What happens to the graph when you change the y-intercept?

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