In problem 1-3 plot the graph of both equations on the same coordinate plane, Find and label the points of intersection of the two graphs (see Example 4).
1. y = -x + 1
Y = (x + 1)2
2. y = 2x + 3
y = (x - 1)2
3. y = 2x + 3
y = -2(x - 4)2