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Sagot :
Answer:
B
Step-by-step explanation:
A proportional function must include the point (0, 0).
That eliminates C and D.
The constant of proportionality is 0.8, so each y-coordinate divided by its corresponding x-coordinate must equal 0.8.
Try A:
0.5/4 = 0.125
0.125 is not equal to 0.8, so A cannot be the answer.
Try B:
4/5 = 0.8
8/10 = 0.8
10/12.5 = 0.8
Firs, B includes the point (0, 0). Also, for each ordered pair, the y-coordinate divided by the corresponding x-coordinate equals 0.8, so B is the answer.
Answer: B
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