What is the solution to the system of equations below?y=-3x-9 and y= 1/3x-39

Guest Jul 3, 2017

#1**+1 **

What is the solution to the system of equations below?y=-3x-9 and y= 1/3x-39

Equate the two equations:

-3x - 9 =1/3x - 39 isolate x to the LHS

-3x - 1/3x = -39 + 9

-3 1/3x = - 30 divideboth sides by -3 1/3

x = -30 / - 3 1/3

x = -30 * -3/10

x = 90/10

**x = 9** sub x in the 1st equation:

y = -3*9 - 9

**y =- 36**

Guest Jul 3, 2017