adakah yang bisa membantu aku? :(,aku ga ngerti tapi ini pake cara

gradien (m) -> y = mx +- c
1.) 3x + 2y = -4
2y = -3x - 4
y = (-3/2) - (4/2)
m = -3/2

2) x + 4y = 17
4y = -x + 17
y = (-x/4) + (17/4)
m = -1/4 -> m2
sejajar -> m1=m2 = m = -1/4

3) 2x + (-5y) = 2
2x - 2 = 5y
5y = 2x - 2
y = (2/5)x - (2/5)
m = 2/5 -> m2
utx tegak lurus m1 = 1/m2
m1 = 1/(2/5)
m1 = 5/2