Please answer?

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1 Answer
Apr 4, 2018

y=4-x

Explanation:

y=x/20(x^2-10)
y=x^3/20-x/2
y=(x^3-10x)/20

Here, you will notice that the equation resembles some part of the equation: x^3+10x-80=0

SO basically, you have to think of an equation that can get you an 80 and somehow get you a +10x
ie 20times (some value) gets you an 80 and +10x

so the line y=4-x will get you that

4-x=(x^3-10x)/20
80-20x=x^3-10x
x^3+10x-80=0