Math7A (Extra Credits)

Solve the system of equations:

-x - y = 0

2x - 2y = -12

• (2,-12)

• (2,2)

• (3,-3)

• (-3,3)

A system of linear equations is shown above.

Which graph can be used to determine the solution to the system of equations? 

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A system of linear equations is shown above.

Which graph can be used to determine the solution to the system of equations? 

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The solution to this system is...

• (4, -2)
• (4, 2)
• (-2, 4) 
• (-4, -2)

Give the solution to the system.

• (3,1)
• (1,3)
• (-1,3)
• (1, -3)

What is the solution?

• (1, -1)
• (-1, 1)
• (0, -2)
• (0, 1)

All of the x values or inputs are called what?

• Domain
• Range
• Relation
• Function

Which graph does NOT pass the vertical line test?

• Graph 1
• Graph 2
• Graph 3
• Graph 4

Which set of values is a function?

• (9,5) (10,5) (9,-5) (10,-5)
• (3,4) (4,-3) (7,4) (3, 8)
• (6,-5) (7, -3) (8, -1) (9, 1)
• (2, -2) (5, 9) (5, -7) (1, 4)

Is the relation a function? Why.

• Yes, because the x-value 11 has two y-values pair with it.
• Yes, because each x-value has only one y-value paired with it.
• No, because the x-value 11 has two y-values pair with it.
• No, because each x-value has only one y-value paired with it.