Answer:
y = 15x
Explanation:
The equation for direct variation is ...
y = kx
where k is the constant of proportionality.
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We can find k by dividing by x:
y/x = k
Using the given values, we find it to be ...
75/5 = k = 15
Using this value of k in the equation, we find the equation of direct variation is ...
y = 15x