marissajarosz marissajarosz

11-01-2017
Mathematics

contestada

what is the full solution of the system by using the substitution method:
3x+y=10
y=6x+1

Respuesta :

samstrah samstrah

11-01-2017

3x+6x+1=10
9x+1=10
9x+1-1=10-1
9x=9
9x/9=9/9
x=1

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apologiabiology apologiabiology

11-01-2017

y=6x+1
sub 6x+1 for y in other equation
3x+6x+1=10
9x+1=10
minus 1 both sides
9x=9
divide both sides by 9
x=1
sub back
y=6x+1
y=6(1)+1
y=7

x=1
y=7

(1,7)

Answer Link

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