tolong bantu buatin isiin caranya ya

4) 2x + 4y + 4 = 0
4y = -2x - 4
y = (-2x - 4)/4
y = (-1/2)x -1 , gradien = -1/2
5) 4x -2y -7 = 0
2y = 4x - 7
y = (4x - 7)/2
y = 2x - 7/2, gradien = 2