Using Substitution to Solve Systems

Question 1

The value of x is 3✔ –37–7.

Revolt · Accepted Answer

✔ –3; .: –3; .: (–3, 7)

Question 2

Which statement about the system of linear equations is true?

Revolt · Accepted Answer

The lines have different slopes.

Question 3

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

Revolt · Accepted Answer

✔ (6, –9)

Question 4

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

Revolt · Accepted Answer

There are infinitely many solutions.

Question 5

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 6

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 7

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

Revolt · Accepted Answer

3/4

Question 8

What is the solution? ( ⇒ 2, ⇒ -2)

Revolt · Accepted Answer

-2

Question 9

Is the ordered pair a solution to the system?

Revolt · Accepted Answer

Yes, because substituting these values into both equations forms two true statements.

Using Substitution to Solve Systems Answers