DFVFilms120 DFVFilms120
  • 14-08-2017
  • Mathematics
contestada

y=4x-9
y=x-3
asking another question
appreciate any answers
edit: find x and y
(x,y)

Respuesta :

kphung76127
kphung76127 kphung76127
  • 14-08-2017
4x-9=x-3
4x=x+6
3x=6
x=2

y=(2)-3
y= -1

Final answer: (2,-1)
Answer Link
apologiabiology
apologiabiology apologiabiology
  • 14-08-2017
solve by subsitution

y=4x-9=y=x-3

4x-9=x-3
minus x both sides
3x-9=-3
add 9 to both sides
3x=6
divide by 3 both sides
x=2

sub ack

y=x-3
y=2-3
y=-1

x=2
y=-1
(x,y)
(2,-1)
Answer Link

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