Using Substitution to Solve Systems

Question 1

Use substitution to solve for x and y.

Revolt · Accepted Answer

Use substitution to solve for x and y.: –2; Use substitution to solve for x and y.: 2; Use substitution to solve for x and y.: (–2, 2)

Question 2

The solution to this system of equations is (3, -3)✔ (–3, 7)(7, –7)(3, –7).

Revolt · Accepted Answer

✔ (–3, 7)

Question 3

The solution to the system of equations is (–2, –2)(2, 2)✔ (–2, 2)(2, –2).

Revolt · Accepted Answer

✔ (–2, 2)

Question 4

The value of x is 3✔ –37–7.

Revolt · Accepted Answer

✔ –3; .: –3; .: (–3, 7)

Question 5

Which statement about the system of linear equations is true?

Revolt · Accepted Answer

The lines have different slopes.

Question 6

The solution to the system is (9, 6)(9, –6)(6, 9)✔ (6, –9).

Revolt · Accepted Answer

✔ (6, –9)

Question 7

What can you conclude about the number of solutions to this system of equations?

Revolt · Accepted Answer

There are infinitely many solutions.

Question 8

When Sylvie verified the solution on a graph, the lines intersected at one point. What was her error?

Revolt · Accepted Answer

She did not substitute the value of x into one of the original equations to find y.

Question 9

Use substitution to solve for x and y.

Revolt · Accepted Answer

✔ –2; Use substitution to solve for x and y.: –2; Use substitution to solve for x and y.: 2; Use substitution to solve for x and y.: (–2, 2)

Question 10

Use substitution to solve the system of equations. What is the value of y? y =

Revolt · Accepted Answer

3/4

Using Substitution to Solve Systems Answers