Write y = mx + b from a table, graph or story, and say what m and b mean
Grade 8 Math Worksheet - Building Confidence

Circle the best answer, or write your answer on the line.
In math club, Ari's line has slope 4 and y-intercept 2. What rule, written as y = mx + b, gives this line?
In math club, Bo's line has slope 6 and y-intercept 1. What rule, written as y = mx + b, gives this line?
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Use the table
input: x output: y 0 3 1 8 2 13 3 18 Esme's math-club table shows a line. What rule, written as y = mx + b, gives every row?
Kira's math-club table shows a line. What rule, written as y = mx + b, gives every row?
Luz draws a line on a math-club grid. What rule, written as y = mx + b, gives this line?
Milo draws a line on a math-club grid. What rule, written as y = mx + b, gives this line?
Graph: x across from 0 to 6, ticks every 1; y up from 0 to 10, ticks every 1. A straight line through the marked points A (0, 4) and B (4, 8). Graph: x across from 0 to 6, ticks every 1; y up from 0 to 10, ticks every 1. A straight line through the marked points A (0, 4) and B (4, 8). 0 1 2 3 4 5 6 0 1 2 3 4 5 6 7 8 9 10 A B Noah draws a line on a math-club grid. What rule, written as y = mx + b, gives this line?
Graph: x across from 0 to 4, ticks every 1; y up from 0 to 12, ticks every 1. A straight line through the marked points A (0, 5) and B (2, 9). Graph: x across from 0 to 4, ticks every 1; y up from 0 to 12, ticks every 1. A straight line through the marked points A (0, 5) and B (2, 9). 0 1 2 3 4 0 1 2 3 4 5 6 7 8 9 10 11 12 A B Pia's plant is 5 cm tall and grows 3 cm each week. Let x be weeks and y the height in cm. What rule gives y, as y = mx + b?
Ren's jar holds 12 buttons, and Ren adds 4 buttons each day. Let x be days and y the buttons. What rule gives y, as y = mx + b?
Tala has let out 10 m of kite string and lets out 2 m more each second. Let x be seconds and y meters. What rule gives y, as y = mx + b?