the graph does not represent a function cause when you make a t chart and put all of the points on it some of the y's have the same x. to have a liniar function the x points and the y points have to be to one another accept the y points can have two of the different x points. you can also do the vertical line test to se if it is a function.
the answer is c.
Answer:

Step-by-step explanation:
Given

Point (4,-5)
Required
Determine the line equation
From the question, we understand that the line is parallel to 
This implies that they have the same slope, m
A linear equation is:

Where

By comparison:
and 

Next, we determine the line equation using:

Where
and 


Hence,
<em>Option C is correct</em>
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Answer:
R=9
Step-by-step explanation:
Change the sign of -2 to 2
Add 2 to 7
Since we know that a negative times a negative equals a positive, we know that our answer is positive. Then follow the steps below.