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For which of the following graphs is y a function of x

For which of the following graphs is y a function of x-example-1
User Jacobangel
by
6.6k points

2 Answers

7 votes

Answer:

D

Explanation:

Use the vertical line test.

If 2 points have the same x coordinate, it is not a function

A fails

B fails

C fails

D passes

User Carrier
by
7.1k points
3 votes

Answer:

D

Explanation:

Draw vertical lines on your graph if they pass through more than once it is not a function.

User Tolsee
by
6.9k points