Solve the system by the method of substitution.

3y = –1/2x+ 2
y = –x + 9

(3, 6)

(20, –4)

(10, –1)

(–1, 8)

Question

Solve the system by the method of substitution.


3y = –1/2x+ 2
y = –x + 9
		
(3, 6)
		
(20, –4)
		
(10, –1)
		
(–1, 8)

anonymous · Answer

Will give medal

anonymous · Answer

@amistre64

anonymous · Answer

@robtobey

anonymous · Answer

@satellite73

anonymous · Answer

@asnaseer

anonymous · Answer

Take each set of points and plug them into one of the equations.

anonymous · Answer

if i do that how do i know which one is right

jamierox4ev3r · Answer

because it is clearly stated that y=-x+9, you can plug it in to make one big equation

jamierox4ev3r · Answer

3(-x+9)=-1/2x+2

amistre64 · Answer

in order to BE a solution to the system of equations .... the correct option has to make both cases true

jamierox4ev3r · Answer

-3x+27=-1/2x+2
+3x -2   +3x    -2
       25= 5/2x
       x=10

anonymous · Answer

kk thx

jamierox4ev3r · Answer

can you solve for the y-variable @isiah ?

anonymous · Answer

i believe i can if i cant can i ask you for help

jamierox4ev3r · Answer

aweseom just hit me up $\Huge\ddot\smile$