Hello,

if you want to calculate the coordinates of points choose a x-value and plug it into the equation.

For instance:

x = -2 ==> A(-2, 2) You have to use the first term because the x-value is smaller than 1

x = 0 ==> B(0, 0) You have to use the first term because the x-value is smaller than 1

x = 1 ==> C(1, 2) You have to use the second term because the x-value equals 1

x = 3 ==> D(3, 4) You have to use the second term because the x-value is greater than 1

I've attached an image of the graph.

EB