11
It is 8
8
It is 2 and the y intercept is -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.
If: y = 8x+7 then the y intercept is 7 and the slope is 8
y = 6x+8 is already in slope intercept form
2xy substitute 3 for y and 5 for x 2(5)(3) = 30
-11
Add 8 to the x value, so f.e. If x=4, the y intercept = 4+8 =12 No, the y intercept is the value of y when the value of x = 0, so the y intercept of the equation is 8. In the general form y = mx + b, b will always be the y intercept.
The y-intercept equals 0.
2y = -6x + 8 The y intercept occurs when x = 0 2y = 8 therefore y = 4