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hjlf
3 years ago
15

If y varies directly as x2 and y = 144 when x = 4, what is the value of y when x = -5?

Mathematics
1 answer:
muminat3 years ago
6 0
Y varies with x² times a constant. We will call the constant a
144=ax²
144 = a(4²)
144 = 16a
a = 9
Apply our equation y = 9x²
y = 9(-5)²
y = 9* 25
y=225
Answer is B

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