Question

Say true or false:

$-\frac{4}{5}$ is a zero of $4-5y$.

• A. True
• B. False

Answer 1

The correct option is B False

Let $f\left(y\right)=4-5y$.
We know, if $-\frac{4}{5}$ is zero of $f\left(y\right)$, then $f(-\frac{4}{5})$ must be $0$.

Thus,
$f(-\frac{4}{5})=4-5(-\frac{4}{5})$
$=4-(-\frac{20}{5})$
$=8$.

Hence, the statement is false.

Therefore, option $B$ is correct.