The graph is in the image at the end.
How to plot the line?
Here we want to plot a line with two known points, we know that the x-intercetpt is 4, while the y-intercept is -2.
So we have the points (4, 0) and (0, -2)
Then the line can be written as:
y = ax - 2
Replacing the values of the first point we get:
0 = a*4 - 2
2 = 4a
2/4 = a
1/2 = a
The equation is:
y = 1/2*x - 2
Now to plot it, just graph the two given points and draw a line that connects them.