8th grade Write y = mx + b from a table, graph or story, and say what m and b mean worksheet

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.

1. 1.

   In math club, Ari's line has slope 4 and y-intercept 2. What rule, written as y = mx + b, gives this line?
2. 2.

   In math club, Bo's line has slope 6 and y-intercept 1. What rule, written as y = mx + b, gives this line?
3. 3.

   In math club, Esme's line has slope 2 and y-intercept 9. What rule, written as y = mx + b, gives this line?

4. Read this first

   Use the table

   input: x	output: y
   0	3
   1	8
   2	13
   3	18

5. 4.

   Esme's math-club table shows a line. What rule, written as y = mx + b, gives every row?
6. 5.

   Jun's math-club table shows a line. What rule, written as y = mx + b, gives every row?
7. 6.

   Kira's math-club table shows a line. What rule, written as y = mx + b, gives every row?
8. 7.

   Luz draws a line on a math-club grid. What rule, written as y = mx + b, gives this line?
9. 8.

   Milo draws a line on a math-club grid. What rule, written as y = mx + b, gives this line?
10. 9.

    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?
11. 10.

    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?