Compare two functions given as a table, graph, equation or story

Answer Key - Grade 9 Math Worksheet

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

1. 1.

   Milo compares two kites. B is y = 2x + 12, with x in minutes. A is the graph. Which grows faster?

   • They grow at the same rate
   • A grows faster: 3 a minute, and B only 2
   • B grows faster: it starts at 12, and A at 6
2. 2.

   Noah compares two bike rides. A is in the table and B is the graph. Which grows faster?

   • B grows faster: its dots jump 9, and A only 8
   • A grows faster: 4 km an hour, and B only 3
   • B grows faster: it starts at 5, and A at 2
3. 3.

   Ren compares two rockets. A is the graph and B is the table (heights in meters). How much greater is B's highest height than A's?

   2
4. 4.

   Tala compares two thrown balls. A is the graph and B is the table (heights in feet). How much greater is B's highest height than A's?

   3
5. 5.

   Zee compares two kites. A is the graph and B is the table (heights in meters). How much greater is A's highest height than B's?

   5
6. 6.

   Ari compares two swings. A is the graph and B is the table (heights in dm). How much greater is B's highest height than A's?

   1
7. 7.

   Bo compares two snack carts. A is y = 3x − 12. B is the graph. What is B's x-intercept minus A's x-intercept?

   1

8. Read this first

   B: Table

   input x	output y
   −8	0
   −4	4
   0	8
   4	12

9. 8.

   Esme compares two lamps. A is y = 2x + 10. B is the table. What is A's x-intercept minus B's x-intercept?

   3
10. 9.

    Jun compares two rockets. A is y = 4x − 20. B is the graph. What is B's x-intercept minus A's x-intercept?

    2
11. 10.

    Kira compares two tents. A is y = 5x + 10. B is the graph. What is B's x-intercept minus A's x-intercept?

    -1