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