3. Solve the equation using substitution. x + y = 8 y = 3x
To the Lesson 2: Solving systems using substitutions; Practice
B
A
B
C
D
A
A
B
C
A
I got alot of them wrong but wrote down the answers so other people can look at them for help. <3 These are all correct
Just in case someone wanted to make sure they had the same questions!
1) solve the system using substitution
X + y = 8
y = 3x
A) (2,6)
2) Solve the system using substitution
2x + 2y = 38
Y= x + 3
A) (8,11)
3) solve the system using substitution
Y = 8 - x
7 = 2 - y
A) (13,-5)
4) solve the system using substitution
3x + 2y = 23
1/2x - 4 = y
A) (31/4, -1/8)
5) solve the system using substitution
Y - 2x = 3
3x - 2y = 5
A) (-11, -19)
6) solve the system using substitution
4x = 3y - 2
18 = 3x + y
A) (4,6)
7) adult tickets to a play cost $22. Tickets for children cost $15. Tickets for a group of 1a people cost a total of $228. Write and solve a system of equations to ind how many children and how many adults were in the group
A) 2 children, 9 adults
8) tell whether the system has one solution, infinitely many solutions, or no solution.
6y = -5x + 24
2.5x + 3y = 12
A) infinitely many solutions
9) tell whether the system has one solution, infinitely many solutions, or no solution.
X = -7y + 34
X + 7y = 32
A) no solution
10) tell whether the system has one solution, infinitely many solutions, or no solution.
1.5x + 2y = 11
3x + 6y = 22
A) one solution
Sorry if there are any mistakes, im on mobile
1. B
2. A
3. B
4. C
5. D
6. A
7. A
8. B
9. C
10. A