T.4

Write a Linear Function from a Table

Q3 · Feb–Apr

Find the rate of change and the initial value from a table, then write y = mx + b.

Level

Medium

Level

Problems

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@page { size: letter; margin: 0; } @media print { .ws-page + .ws-page { break-before: page; } } Daniel Math Academy \cdot Grade 8 Math Write a Linear Function from a Table Skill T.4 \cdot Functions \cdot ★★☆ Medium \cdot Quarter 3 Name Date Score / 6 Scan for answers Write a linear function y = mx + b for each table. Example x y 021528311 m = \frac{5 - 2}{1 - 0} = 3, b = 2 : y = 3 x + 2 Think: The slope is the change in y over the change in x; the y-intercept is the value of y when x = 0. 1 x y 211514615817 2 x y 111417621825 3 x y - 2 - 1 - 1 0 1234 4 x y 2 - 21 5 - 39 6 - 45 8 - 57 5 x y - 2 3 - 1 - 1 1 - 9 4 - 21 6 x y 1328418523 Daniel Math Academy \cdot danielmath.com Worksheet # cvwrfxj \cdot Page 1 / 2 Daniel Math Academy \cdot Grade 8 Math Answer Key T.4 Write a Linear Function from a Table \cdot ★★☆ Medium 1 y = x + 9 2 y = 2 x + 9 3 y = x + 1 4 y = - 6 x - 9 5 y = - 4 x - 5 6 y = 5 x - 2 Daniel Math Academy \cdot danielmath.com Worksheet # cvwrfxj \cdot Answer Key \cdot Page 2 / 2

T. Functions7 skills