If you mean: 4(x-2) = 0 then 4x-8 = 0 and x = 2
If you mean: x+2y = 8 Then: y = -1/2x+4 Perpendicular equation: y = 2x+4
If you mean y = -4(x+2) then y = -4x -8 whereas the slope is -4 and the y intercept is -8
10
16
the mean is the average; (9 +8+4 + X)/4 = 8; solve for X ; (21 +X)/4 = 8; X = 11
-4
If you mean: y = x+4 and y = 3x+8 then x = -2 and y = 2
If you mean the square root of (4 x 16) the answer is 8 or -8. If you mean (the square root of 4) x 16, the answer is 32 or -32.
Assuming you mean 84 This means eight to the power of four. That is 8 x 8 x 8 x 8 = 4096
If you mean: y = x^2 -2x -8 then x = -2 or x = 4
If you mean: 4(x-2) = 0 then 4x-8 = 0 and x = 2
2
If you mean: x+2y = 8 Then: y = -1/2x+4 Perpendicular equation: y = 2x+4
If you mean: x-2y = 8 then it is y = 0.5x-4.
If you mean: x2+6x+8 then it is (x+4)(x+2) when factored
4 x 1 = 4 4 x 2 = 8 4 x 3 = 12 4 x 4 = 16 4 x 5 = 20 4 x 6 = 24 4 x 7 = 28 4 x 8 = 32 4 x 9 = 36 4 x 10 = 40 4 x 11 = 44 4 x 12 = 48 4 x 13 = 52 4 x 14 = 56 8 x 1 = 8 8 x 2 = 16 8 x 3 = 24 8 x 4 = 32 8 x 5 = 40 8 x 6 = 48 8 x 7 = 56 28 x 1 = 28 28 x 2 = 56 lcm of 4, 8, and 28 = 56