. Grade 8, Illustrative icon

Equations of Lines

Illustrative MathematicsVaries

This task requires students to use the fact that on the graph of the linear equation y = ax + c, the y-coordinate increases by a when x increases by one. Specific values for c and d were left out intentionally to encourage students to use the above fact as opposed to computing the point of intersection and then computing respective function values to answer the question.

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