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MrRa [10]
3 years ago
13

To solve the system of equations below, Maria isolated the variable y in the first equation and then substituted it into the sec

ond equation. What was the resulting equation?
{ 3y=12x
{x^2+y=18

A. x^2 + x = 18
B. x^2 − 4x = 18
C. x^2 + 4 = 18
D. x^2 + 4x = 18
Mathematics
2 answers:
GaryK [48]3 years ago
8 0

Answer:

D. x^2 + 4x = 18

Step-by-step explanation:

To solve the system of equations below, Maria isolated the variable y in the first equation and then substituted it into the second equation.

First equation is 3y=12x

To isolate y we divide both sides by 3

y=4x

Now substitute 4x for y in second equation

x^2+y=18

x^2+4x=18

this equation is in option D

Evgen [1.6K]3 years ago
7 0
Y = 4x
The answer is D
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