tristanhall91 tristanhall91

13-06-2019
Mathematics

contestada

Solve the following system by the comparison method.

2p + q = 1
9p + 3q + 3 = 0
What is the solution set?

Respuesta :

Buckshot256983 Buckshot256983

13-06-2019

Answer:

2p + q = 1

9p + 3q + 3 = 0

q = 1 - 2p

replace q = 1 - 2p into 9p + 3q + 3 = 0

9p + 3(1 - 2p) + 3 = 0

9p + 3 - 6p + 3 = 0

3p + 6 =0

3p = -6

p = -2

q = 1 - 2p

q = 1 -2(-2)

q = 1 + 4

q = 5

(-2 , 5)

there for the answer would be

{(-2, 5)}

Hopefully this was helpful <3 :3

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