obvious points are (-4,3)
y - 3 = 1/2(x + 4)
y - 3 = 1/2x + 2
y = 1/2x + 2 + 3
y = 1/2x + 5
additional points :
sub in any number u want for x, and find y
y = 1/2x + 5.....subbing in 2 for x
y = 1/2(2) + 5
y = 1 + 5
y = 6
so when x is 2, y is 6....(2,6) <== additional point
y = 1/2x + 5 ...subbing in 0 for x
y = 1/2(0) + 5
y = 5....so when x is 0, y is 5......(0,5)... <== additional point