Find all the real zeros of the function y = - 5x - 7

-7/5 if your function really is f (x) = -5x-7

Step-by-step explanation:

The zeros of an expression are the numbers you can plug into that expression that will make that expression 0.

So what value of x will make the expression

-5x-7=0.

You don't have to this by observation. We can just solve it and see.

-5x-7=0

Add 7 on both sides:

-5x. = 7

Divide both sides by - 5:

x. = 7/-5

x. = -7/5

So - 7/5 will make the expression equal to 0.

Let's test this:

-5x-7 when x=-7/5

-5 (-7/5) - 7

7-7

0

So it does indeed.