Answer:
The ordered pair solution is (-2, 8)
Step-by-step explanation:
y = -4x ------ equation 1
y = 2x + 12 ---- equation 2
We solve for x by substitution;
Substituting the value of y into equation 2;
y = 2x + 12
-4x = 2x + 12
-4x -2x = 12
-6x = 12
Divide by -6
x = 12/(-6)
x = -2
From equation 1;
y = -4x
Substituting the value of x;
y = -4×(-2)
y = 8.
PROOF;
y = -4x
8 = -4*(-2)
8 = 8
First you need to distribute the 9.
So 9 times 3 and 9 times 2
The Algebraic should look like now: (27^3x-18)
So the final answer is: 
You cannot simplify it anymore because there are <u>no like terms left.</u>
I think the correct answer from the choices listed above is option D. The set of equivalent ratios that would describe the proportional relationship of the two quantities given are <span> (11, 13.2)(99, 118.8)(20, 24). All of the pair of numbers in the set have the same ratio which is 6/5. Hope this answers the question.</span>
