8 lol :]
It is 8 and the y intercept is 8
y=-x+8
.8
Slope = coefficient of x = 8
x2 + y2 = x2 - 2xy + y2 + 2xy = (x - y)2 + 2xy = 72 + 2*8 = 49 + 16 = 65 You could, instead, solve the two equations for x and y and substitute, but the above method is simpler.
8-x2y 8-2xy 2xy-8
This slope is 8
The slope is -2
if the equation is 2x+y=8 then the slope is -2
y=-5x+8 the slope is -5.
8