Is it proportional?

Grade 7 Math Worksheet - Building Confidence

Circle the best answer.

1. Read this first

   Use the table

   minutes	pages	pages for 1 minute
   2	6	3
   4	12	3
   6	20	10/3

2. 1.

   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
3. 2.

   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 and seeds are different numbers
   • Yes: every row has 4 seeds for 1 tray
   • No: trays go up by 2, then by 5
4. 3.

   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?

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

   Ari packs apples into bags for the school fair. The table shows bags and apples. Is it proportional, and why?

   • No: bags go up by 1, then by 4
   • Yes: every row has 5 apples for 1 bag
   • No: bags and apples are different numbers
6. 5.

   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?

   • No: it does not go through (1, 1), so the rate is not steady
   • Yes: it is a straight line through (0, 0)
   • No: the line is not flat
7. 6.

   Tala's bean plant is already sprouting when the measuring starts. The graph shows days and inches. Is it proportional, and why?

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

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

    • No: cups and lemons are different things
    • No: it needs a starting amount
    • Yes: 4 cups of water for each lemon, every time
11. 10.

    Luz's bookmark is on page 20, and Luz reads 2 pages a minute. Is the page number proportional to the minutes, and why?

    • No: at 0 minutes the page number is already 20
    • Yes: it grows by 2 pages every minute
    • No: reading is not a rate