What is the x-coordinate of the point of intersection for these two lines?
9x + 2y = 16
x - 2y = 4
a.) 1
b.) -1
c.) 2
d.) -2

You need to use substitution, to do so, you isolate one of the variables x or y in one equation, and then you substitute that equation into the other.

Since you only need to find x, isolate the y in one of the equations

x - 2y = 4

y =

Plug this in and simplify

9x + 2y = 16

9x + 2() = 16  Distribute the 2

9x + x - 4 = 16  

10x = 20

x = 2    Your answer is C

1: -2 3/4, -2 1/2, -14, 0, 3, 8 1/3

2: -4, -3, -2 1/2, -2 1/4, 3 1/4,

step-by-step explanation:

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step-by-step explanation: