Every x value should have only one value of y.
So the answer is the last choice.
Step-by-step explanation:
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Answer:
m=0
Step-by-step explanation:
The slope of a line can be found using:

Let's call (2,0) our "2" coordinate, and (1,0) our "1" coordinate.
Coordinates are written as: (x,y)
Therefore, our x2 is 2 and y2 is 0. Our x1 is 1 and y2 is 0.
Substitute these values into the formula .


m=0
The slope of the line is 0