SOLUTION: solve the systems y=-x and y=4x-8

Algebra.Com
Question 189387: solve the systems y=-x and y=4x-8
Answer by Mathtut(3670)   (Show Source): You can put this solution on YOUR website!
solve the systems y=-x and y=4x-8
:
take y's value in 1st eq and plug it into 2nd eq
:
-x=4x-8
:
5x=8
:
x=8/5
:
now plug this back into either eq. I will use y=-x
:
y=-8/5
:
so (8/5,-8/5)

RELATED QUESTIONS

Solve the system by the method of your choice. Identify systems with no solution and... (answered by Alan3354)
Solve the following systems of equations. {{{ x^3+4x=y }}} {{{ 4x^2=y... (answered by Fombitz)
Solve for the ff systems: 3x + 2y + z = 2 4x + 2y + 2z = 8 x - y + z =... (answered by Alan3354)
Solve each of the following systems by graphing. 5. x – y = 8 x + y = 2 (answered by jim_thompson5910)
Solve the following 2 x 2 systems using substitutions y= 2x +2 y= 1/2x +... (answered by elima)
Solve each of the following systems by substitution. 8. 3x – y = -15 x = y -7 (answered by jim_thompson5910)
Solve the following systems by graphing x-y=8... (answered by checkley71)
Solve the systems algebraically: y=x^2=4x-2... (answered by Alan3354)
Find the values of x and y that solve the following systems of equations. 6x+7y=-5... (answered by jim_thompson5910)