Asked by charity

Y varies partly as X and as X^2 when X=2 Y=14 and when X=5 Y=65.Express Y interm of X hence find Y when X=-2
Answered by Steve
y = ax+bx^2

2a+4b = 14
5a+25b = 65

y = 3x+2x^2

take it.
Answered by Hope
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