2
y=4x-8y=2x+10Substitute (4x-8) for y in the second equation and solve for x:4x-8=2x+102x=18x=9Now solve for y:y=4(9)-8=28(9,28)
You need to know the value of x
It is: y = -4x+12
4x
8 + y = 4x8 + y - 4x = 4x - 4x 8 + y - 4x = 0 8 - 4x + y = 0
2
x = 9 and y = 28
-4x + y = 8At the x-intercept, 'y' is zero.-4x = 8-x = 2x = -2At the y-intercept, 'x' is zero.y = 8
You cannot solve one linear equation in two variables. You can express y in terms of x but that is NOT solving for y.
4x + 2y = -8 → 2y = -4x - 8 → y = -2x - 4
y=4x-8y=2x+10Substitute (4x-8) for y in the second equation and solve for x:4x-8=2x+102x=18x=9Now solve for y:y=4(9)-8=28(9,28)
x = 11/7 and y = 12/7
Yes.
x = -8, y = 10
y = 4x-3
You need to know the value of x