Explanation:
Since the lines are parallel, they got equal slopes
m1 = m2
First, what's the slope of the first line y = x + 4
y = x + 4 compared to y = mx + c
yh, m = 1 [I hope u understand that... That's coefficient]
m1 = 1
Then, m1 = m2 = 1. [parallel lines]
Yh, we use:
y - y1 = m(x - x1)
y - 3 = 1( x - (-2) )
y - 3 = 1(x + 2)
y - 3 = x + 2
y = x + 5
The equation is y = x + 5