SOLUTION: (1) Solve the system of equation by graphing: x+y=4 y-x=4 (2)x-3y=-3 x+3y=9 (3) Solve by substitution method 7x+3y=-15 x=7-5y

Question 604985: (1) Solve the system of equation by graphing:
x+y=4
y-x=4

(2)x-3y=-3
x+3y=9
(3) Solve by substitution method
7x+3y=-15
x=7-5y
Answer by lynnlo(4176) (Show Source): You can put this solution on YOUR website!
graphing---check to see if i wrote your problem down right
x+y=4
y-x=4 answer: y=4-x
y=x+4
x-3y=3 y=x/3-1
x+3y=9 y=3-x/3
solve substitution" 7x+3y=15
x=7-5y answer:y=17/16
x=27/16
RELATED QUESTIONS
Solve each system by the substitution method. 4x-5y=-2 3y-x=-3... (answered by checkley71)

Solve the system of equations by graphing. y= 1/4 x + 5 3y= 3/4 x +... (answered by Fombitz)

solve the system of equations by using the substitution method 2x-3y=9,... (answered by jim_thompson5910)

Solve each system of equations by the substitution method. 1) y=3x 5x+2y=44... (answered by solver91311,Alan3354)

solve the systems equations by the substitution method 1. x-5y=14 3x-15y=15 2.... (answered by rwm)

slove the system of equations by graphing then classify the system. y + -x -10 4x... (answered by solver91311)

COULD SOME ONE HELP? SOLVE EACH SYSTEM OF SIMULTANEOUS EQUATIONS BY USING THE LINEAR... (answered by stanbon)

how to solve each system by graphing? problems: 1) y= 7x + 4 and y= -x - 4 2) 2x + y (answered by Alan3354)

It says to solve the problem by using the substitution method, elimination method or... (answered by josmiceli)