Does point (a, 4a) lie on the graph of y = 4x?

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mathdad
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Determine if the given point lies on the graph of the equation.

(a, 4a); y = 4x

Solution:

Let y = 4a

Let x = a

y = 4x

4a = 4a

Yes, the point (a, 4a) lies on the graph of y = 4x.

Correct?
 

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