Graph a steady rate: the unit rate is the slope

Answer Key - Grade 8 Math Worksheet - Building Confidence

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

1. 1.

   With the arrow ÷ 4 beside both columns. Ari's printer prints 100 pages in 4 minutes, while a very proud stapler watches. The table's next row is ÷ 4. What is the slope, in pages per minute?

   25
2. 2.

   With the arrow ÷ 2 beside both columns. Bo bikes 30 miles in 2 hours and waves at every goose. The table's next row is ÷ 2. What is the slope, in miles per hour?

   15
3. 3.

   Kira's reading graph is a straight line. A slope triangle under it has run 8 minutes and rise 32 pages. What is the slope, in pages per minute?

   4
4. 4.

   Milo's cookie recipe graph is a straight line, and the dough taster is hopeful. Its slope triangle has run 4 batches, rise 12 cups of flour. What is the slope, in cups per batch?

   3
5. 5.

   Pia rides a bike path at a steady speed and rings the bell at every bridge. The graph shows hours and miles. What is the slope of the line, in miles per hour?

   8
6. 6.

   Tala's candle burns down at a steady rate while the room smells like cookies. The graph shows hours and inches burned. What is the slope of the line, in inches per hour?

   1/2
7. 7.

   Zee weaves a rug at a steady speed, with a very interested pet cat nearby. The graph shows hours and inches woven. What is the slope of the line, in inches per hour?

   6
8. 8.

   Bo's printer line has slope 20. Its graph shows minutes across and pages up. Which sentence says what the slope means?

   • 20 minutes for each 1 page
   • 20 pages in all
   • 20 pages for each 1 minute
   • The line starts at 20 pages
9. 9.

   Esme's snail line has slope 1/2. Its graph shows minutes across and inches up. Which sentence says what the slope means?

   • 1/2 inch for each 1 minute
   • 1/2 minute for each 1 inch
   • The line starts at 1/2 inch
   • 1/2 inch in all
10. 10.

    Jun's reading line has slope 2. Its graph shows minutes across and pages up. Which sentence says what the slope means?

    • 2 minutes for each 1 page
    • 2 pages for each 1 minute
    • The line starts at 2 pages
    • 2 pages in all