Quiz 3

How many solutions will this system have? 

• No solution

• One Solution

• I Don't Know

• Infinitely Many Solutions

^{What is the solution?} 

• 1

• -2

• (1, 2)

• (1, -1)

Which of the following are ways to solve systems of equations? 

• Graphing

• Substitution

• Elimination

• All of the above

what is the resulting combined equation to the following system:

5x - 4y = 11

5x + 4y = -14

• 5x = -3

• 10y = -3

• 10x = -3

• 10x = -25

5x - 4y = 11

5x + 4y = -14

which variable will be eliminated?

• x

• y

• none!!!!!!!

• both

Solve by elimination:

4x+9y=28

-4x-y=-28

• (-7,0)

• (6,0)

• (-6,0)

• (7,0)

The sum of the interior angles of a triangle is always

Find the value of x

True or False: These are congruent triangles.

• True

• False