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Mathematics
Xavier Carney
18 September, 07:55
If y=-16 when x=4 find x when y=48
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Raindrop
18 September, 10:30
0
x = - 12
Step-by-step explanation:
Assuming this is a direct variation
y = kx
When y = - 16 x = 4 we can find k
-16 = k*4
Divide each side by 4
-16/4 = 4k/4
-4 = k
So
y = - 4k
Y = 48
48 = - 4x
Divide each side by - 4
48/-4 = - 4x/-4
-12 = x
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