bantuin ya teman teman

a. 8x + 4y = 16
4y = -8x + 16
y = -2x + 4
gradien = m = -2

b. 6y = 4x - 12
y = 2/3 x - 2. m = 2/3

c. 6y = -9x - 12
y = - 3/2 x - 2. m = -3/2

d. 2y = 5x + 10
y = 5/2 x + 5. m = 5/2