Finding the gradient using the rise/run method:
y2-y1 / x2-x1 = gradient
Point 1 = (0,4)
Point 2 = (2,-2)
-2-4 / 2-0 = –6/2
-6/2 = –3
So -3 is the gradient (slope).
To find the y-intercept, find where the line meets the y axis. In this case, the line crosses the y axis when y = 4 (0,4), so the y-intercept is 4.
So the equation of the line would be y = –3x + 4, the first option.
