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Using the graph, predict the y-value when the x-value is 13

A) 17
B) 18
C) 19
D) 20

Using the graph, predict the y-value when the x-value is 13 A) 17 B) 18 C) 19 D) 20-example-1

1 Answer

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9514 1404 393

Answer:

D) 20

Explanation:

Each point marked on the graph is 3 units higher and 2 units to the right of the one before. The last dot is at x=9, so a dot at x=13 will be 2×2=4 units to the right. At the same rate of increase, it will be 2×3=6 units higher than 14.

The y-value is predicted to be 20 at x=13.

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