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Write y=x²+6x-1 in terms of r, given x/r=-3​

User Jin Ling
by
7.9k points

1 Answer

4 votes

Given:


y=x^2+6x-1


(x)/(r)=-3

To find:

The given equation in terms of r if
(x)/(r)=-3.

Solution:

Given that,


(x)/(r)=-3


x=-3r

We have,


y=x^2+6x-1

Substitute x=-3r in the above equation.


y=(-3r)^2+6(-3r)-1


y=9r^2-18r-1

Therefore, the required equation in terms of r is
y=9r^2-18r-1.

User Nuno Ramiro
by
7.7k points

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