There are two ways to approach this.
Option #1:
Use the slope formula
.

That value is undefined, so the slope is undefined.
Option #2:
Because the two points have the same x-value, they will be vertically above/below one another. This means your line is a vertical line and the slope of a vertical line is undefined.
Either way, your slope is undefined.
Answer:
-4
Step-by-step explanation:
Answer:
Step-by-step explanation:
MARK BRAINLIEST PLEASE ☺️☺️
First you multiply 20 by .15 and you get 3. Subtract 3 by 20 and you get 17. Now multiply $17 by 30 and you get 510. She spent $510 on 30 calculators
Answer (first one):

Step-by-step explanation:
think of f(x) as y.

Now find the parts on the x axis that correspond with parts on the y value that are greater than -2.

This would be all of the numbers between -2 and 8 (inclusive).
The reason it is inclusive is because the arrow ends are shaded in.
The cost per shirt is $9.66 because you divide 38.64 by 4.