MayaEThomas MayaEThomas

24-01-2021
Mathematics

contestada

Solve the system by substitution.
y = 3x
y = -4x – 49

Respuesta :

darealmarinda123 darealmarinda123

24-01-2021

Answer:

Step-by-step explanation:

Substitute 3x into y=-4x-49

y=−4x−49

3x=−4x−49

3x+4x=−4x−49+4x(Add 4x to both sides)

7x/7=−49/7

(Divide both sides by 7)

x=−7

Step: Substitute−7forxiny=3x:

y=3x

y=(3)(−7)

y=−21(Simplify both sides of the equation)

Answer:

x=−7 and y=−21

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