For this question you are required to determine what is called a slope and y-intercept. To thoroughly explain, a slope is a constant factor while a y intercept is simply a number on the y-axis, for instance (0,1)
In order to determine slope, you would take two ordered pairs and use the following y2 - y1 divided by x2 - x1 to determine slope.
On the first attachment, take two ordered pairs.
-1 - (-3) divided by 1-0
2/1 = 2
m = 2
On the second attachment, use a principle called rise over run to determine the slope.
Using the method above, we “rise” two boxes and “run” one box, therefore the slope for the second attachment would be 2 and if we go down 2 we determine that the y-intercept is 0
Applying the explanation, we determine for the first attachment that the most sufficient answer is y = 2x - 3
The answer for the second attachment is y = 2x