Practice finding solutions to systems of equations using substitution.
Assignment
The value of x in this system of equations is 1.
3x + y = 9
y=-4x + 10
1. Substitute the value of y in the first equation:
2. Combine like terms:
3. Apply the subtraction property of equality:
4. Apply the division property of equality:
3x +(4x + 10) = 9
-X + 10 = 9
-X=-1
x=1
What is the value of y?

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

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

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

345

step-by-step explanation:

16 is the absolute value

step-by-step explanation: