Is it proportional?

Grade 7 Math Worksheet - Building Confidence

Circle the best answer.

1. Read this first

   Use the table

   hours	inches	inches for 1 hour
   1	4	4
   2	6	3
   3	8	8/3

2. 1.

   Bo measures the snow on the porch every hour, wearing two scarves. The table shows hours, inches, and inches for 1 hour. Is it proportional, and why?

   • No: hours and inches are different numbers
   • Yes: inches go up by 2 every time hours go up by 1
   • No: inches for 1 hour is 4 in row one but 3 in row two
3. 2.

   Jun's printer prints pages with a loud hum. The table shows minutes, pages, and pages for 1 minute. Is it proportional, and why?

   • Yes: rows one and two both have 3 pages for 1 minute
   • Yes: minutes and pages both get bigger
   • No: row three has 10/3 pages for 1 minute, not 3
4. 3.

   Luz plants seed trays in the garden, and one tray gets a tiny flag. The table shows trays, seeds, and seeds for 1 tray. Is it proportional, and why?

   • No: trays go up by 2, then by 5
   • No: trays and seeds are different numbers
   • Yes: every row has 4 seeds for 1 tray
5. 4.

   Milo bakes bread in batches, with a flour cloud on the counter. The table shows batches and cups of flour. Is it proportional, and why?

   • No: row three has 13/3 cups of flour for 1 batch, not 4
   • Yes: rows one and two both have 4 cups of flour for 1 batch
   • Yes: batches and cups of flour both get bigger
6. 5.

   Pia times a garden snail that is in no rush. The table shows minutes and feet. Is it proportional, and why?

   • No: minutes and feet are different numbers
   • Yes: every row has 2/3 foot for 1 minute
   • No: feet go up by 2 each time, but minutes go up by 3
7. 6.

   Esme's bathtub fills at a steady rate, with one rubber duck on watch. The graph shows minutes and gallons. Is it proportional, and why?

   • Yes: it is a straight line through (0, 0)
   • No: it does not go through (1, 1), so the rate is not steady
   • No: the line is not flat
8. 7.

   Noah hikes a trail that begins at a campsite. The graph shows hours and miles from the gate. Is it proportional, and why?

   • No: it does not go through (1, 1)
   • Yes: it is a straight line
   • No: the line does not go through (0, 0)
9. 8.

   Kira scoots 5 miles every hour, never stopping. Is the distance proportional to the time, and why?

   • No: the distance changes over time
   • Yes: 5 miles for each hour, every hour
   • No: miles and hours are different units
10. 9.

    There are already 2 inches of snow when Milo starts, and 3 more inches fall every hour. Is the snow depth proportional to the time, and why?

    • No: the numbers are different
    • No: at 0 hours there are already 2 inches
    • Yes: it grows by 3 inches every hour
11. 10.

    Bo's lemonade uses 4 cups of water with every lemon. Is the water proportional to the lemons, and why?

    • Yes: 4 cups of water for each lemon, every time
    • No: it needs a starting amount
    • No: cups and lemons are different things