If y varies directly as the x^2 and y =200 when x =5 ,What is the value of y when x =-3
2 answers:
X^2 --> 5^2 = 25
200 / 25 = 8
so, you can assume that:
x^2 --> (-3)^2 = 9
9 * 8 = y
72 = y
this is how I would solve it anyway. Hope it helped.
The answer you want would be -120
b/c 200/5 is 40 so -3*40 is <em>-120</em>
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