Question

Consider the following pair of equations:

y = x + 4
y = −2x − 2

Explain how you will solve the pair of equations by substitution. Show all the steps and write the solution in (x, y) form.

Answer 1

it already tells u the value of y so plug it in opposite equations :)
E1 -----> E2

Answer 2

\[\huge~ x + 4= −2x − 2 \]
Now you have to combine like terms

Answer 3

x+2x=?
-2-4=?

Answer 4

3x and -6

Answer 5

good
\[\huge3x=-6\]
Whats -6/3

Answer 6

-2

Answer 7

Good so we have x=-2
now just plug in X value into E1 :)
\[y = (-2)+ 4\]

Answer 8

wait im confused

Answer 9

how did you get that equation?

Answer 10

OHH

Answer 11

i understand now :)

Answer 12

good :) so whats the answer?

Answer 13

y=2

Answer 14

good so we have
x=-2
y=2
:)

Answer 15

Thank you so much!

Answer 16

No problem :)