Y = 5X + 1
Is a line and should pass the vertical line test for functions, so this is a function.
Yes.
5x+1
4x2-5x+1 = 0 (4x-1)(x-1) = 0 x = 1/4 or x = 1
1 + 7y = 5x - 2 7y = 5x - 3 - 5x = - 7y - 3 x = 7/5y + 3/5 ---------------------
5x - y + 1 = 0
Multiply the bottom equation by -1
Factored, that's 4(5x + 1)(5x + 1) or 4(5x + 1)2 If the whole thing equals zero, x = -1/5
0 because X= -1
(1, 1)
If 3x + 5x = -8, what is x + 1? 3x + 5x = -8 8x = -8 x = -1 x + 1 = -1 + 1 = 0
4 + 5x = 1 5x = 1 - 4 5x = -3 x = -3/5 x = -0.6
x=1/5