Q21. - Algebra 1

Question

If $f\left(x\right)=5-2x$ and $g\left(x\right)=x^2+7x$, find each value.

$f\left(-6y\right)$

Step-by-Step Solution

Answer

The value of the $f\left(-6y\right)$ is $5+12y$.

Step 1. Given information.

We have a function $f\left(x\right)=5-2x$

To find the value of $f\left(-6y\right)$.

Step 2. Apply the concept.

We substitute the value of the $x=-6y$ in the given function $f\left(x\right)$ and find the value of $f\left(-6y\right)$.

Step 3. Calculation.

Substitute $x=-6y$ in the function $f\left(x\right)=5-2x$

$f\left(-6y\right)=5-2\times \left(-6y\right)$

$\Rightarrow f\left(-6y\right)=5+12y$

Hence, the value of the $f\left(-6y\right)$ is $5+12y$.