Solve for y in y = 8x - 5 if x = -1

Hello there!

In the equation y = 8x - 5, let's replace 'x' with -1.

The equation should now look like this:
y = 8*(-1) - 5

Let's apply PEMDAS to this equation to solve for y.
We do not have P or E, so we must multiply.

8*(-1) = -8

Our equation has taken one step. Let's take a look at it now.

y = -8 - 5

We now only have one step remaining - subtraction.
Remember when you subtract from a negative, you have the same concept as adding two positive numbers.

Subtract 5 from -8.

y = -13 is your solution for y.

I hope this helps!