Answer
y=0x+4
Work Step by Step
Between the first and second pair, we can see that there is a difference of 4 in the x direction, but no change in the y direction. This means the line is flat, and thus the slope of the line is 0x. In other words, the x value does not affect the y value. When x=-3 and 1, y is always 4, meaning the constant in this function is 4.
