Answer:
slope is -1/4
Step-by-step explanation:
=
= 
and so on...
formula: 
hope this helps!!!
21
is what I got on my calculator
Answer:
<h2> The first</h2>
Step-by-step explanation:

That means every x wich is greater than 7
Desmos.com and plug in the equation
To rotate clockwise 90 degrees from a point (x, y) the image will be (y, -x)
In this case given the point (-1, 1), the image will be (1, -(-1)) or (1, 1)