Find the slope from a table, a graph or two points

Answer Key - Grade 8 Math Worksheet - Challenge Me

Circle the best answer, or write your answer on the line.

1. Read this first

   Use the table

   input: x	output: y
   2	1
   6	-7
   -3	11
   1	3

2. 1.

   Milo's math-club table is linear, with uneven steps and mixed-up rows. What is the slope of the line?

   -2
3. 2.

   In math club, Ren gets two points on a line: (1/2, 4) and (3, 9). What is the slope of the line?

   2
4. 3.

   In math club, Tala gets two points on a line: (-1.5, 2) and (1, -3). What is the slope of the line?

   -2
5. 4.

   In math club, Zee gets two points on a line: (2/3, 1) and (8/3, 7). What is the slope of the line?

   3
6. 5.

   Ari plots a line on a math-club grid. The two axes have different scales. What is the slope of the line?

   -2/5
7. 6.

   Bo plots a line on a math-club grid. The two axes have different scales. What is the slope of the line?

   -4
8. 7.

   Esme plots a flat line on a math-club grid. The two axes have different scales. What is the slope of the line?

   0
9. 8.

   Milo's line has slope 3 and goes through (2, 5). Another point on it has x = 6. What is its y?

   17
10. 9.

    Pia's line has slope 1/2 and goes through (4, -3). Another point on it has x = 12. What is its y?

    1
11. 10.

    Tala graphs the evening temperature: hours across, °C up. The slope is -3/4. What does the slope tell?

    • The temperature drops 3 °C every 4 hours
    • It is -3/4 °C outside
    • The temperature drops 4 °C every 3 hours
    • The temperature rises 3 °C every 4 hours