Tentukan titik potong 7x+5y=2 dan 5x+7y=-2

7x+5y=2
a. titik potong sumbu x,y=0
7× + 5(0) = 2
7× = 2
× = 2/7
b.titik potong sumbu y,x=0
7× + 5y =2
7(0) + 5y = 2
5y = 2
y = 2/5
jadi (2/7, 2/5)
5x+7y = -2
a.titik potonh sumbu x,y=0
5× + 7(0) = -2
5× = -2
× = -2/5
b.titik potong sumbu y,x=0
5× + 7y = -2
5(0) + 7y = -2
7y = -2
y = -2/7
jdi, (-2/5, -2/7)