3y - 20 = 8y
Subtract 3y from each side:
-20 = 5y
Divide each side by 5:
-4 = y
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To solve for y, divide both sides of the equation by -0.8.
-8x-8y=-64 -8y=8x-64 y=-x+8
(8x-8y)/(8x+8y) = (x-y)/(x+y)Cancel down by 8; you have simplified the equation.
Convert the equation into standard form, y = mx + c, where m is the slope and c is the y intercept. -2x - 8y = 16 8y = -2x - 16 y = - x/4 - 2 Then the slope is -1/4 and the y intercept is -2
x - 8y = 4; turn the equation in the slope-intercept form, y = mx + b, where b is the y-intercept. x - 8y = 4x - x - 8y = -x + 4-8y = -x + 4 divide by -8 to both sidesy = x/8 - 1/2 Thus, the y-intercept is -1/2.