Question 1

1.  Solve the system by graphing.

Accepted Answer

(-2, -1)

Answer

(0, -3)

Answer

(-1, -2)

Answer

(0, 1)

Question 2

2.  Solve by substitution.

Accepted Answer

$(8, 13 )$

Answer

$(13, 8)$

Answer

$(3, 8)$

Answer

$(\frac{-2}{3},\frac{13}{3}  )$

Question 3

3.  Solve by elimination.

Accepted Answer

$(6,2)$

Answer

$(12,-4)$

Answer

$( 2,6)$

Answer

$(-4,12)$

Question 4

4.  Solve by elimination.

Accepted Answer

$(-6 ,-1)$

Answer

$(-1 ,-6)$

Answer

$(6,-1)$

Answer

$( -4,1)$

Question 5

5.  State the domain and range.  Then determine if it is a function.

Accepted Answer

Domain:  $(-\infty, \infty)$  Range:   $[-4, \infty)$.   Yes, function.

Answer

Domain:  $[-4, \infty)$  Range:   $(-\infty, \infty)$.   Yes, function.

Answer

Domain:  $(-\infty, \infty)$  Range:   $[-4, \infty)$.   No, not a  function.

Answer

Domain:  $[-4, \infty)$  Range:   $(-\infty, \infty)$.   No, not a function.

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