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

use substitution

Answer 2

(x+4)=-2x-2

Answer 3

combine the like terms like we did in the other problem

Answer 4

y = x + 4 - eqn 1
y = –2x – 2 - eqn 2
Put y = x + 4 in eqn 2
x + 4 = -2x - 2
Solve for x

Answer 5

Hint: Combine the like terms.

Answer 6

thats exactly what I said

Answer 7

x + 4 = -2x - 2
Isolate x
x + 2x = -2 - 4

Answer 8

@ladybugg98

Answer 9

Are you there @ladybugg98 ?