Alg 2 - Unit 1 Review

120 = 6(2k - 6)

• 14

• 4

• 7

• -7

3(1 - 4k) - 5k = -133

• -8

• 8

• 2

• 10

 $\left|x\ +\ 4\right|\ =\ 14$  

• {10, -18}

• {10}

• {-10, 18}

• {18}

 $-142\ >\ 3\left(1\ +\ 8b\right)\ +\ 5b$  

• b > 5

• b > -5

• b < -5

• b < 5

 $88\ \ge\ 8\left(x\ +\ 5\right)$  

•  $x\ \ge\ 8$  

•  $x\ \le8$  

•  $x\ \le\ -8$  

•  $x\ \ge\ -8$  

What is the slope and y-intercept?

4x + 5y = -25

• $m\ =\ \frac{4}{5}\ ;\ \left(0,4\right)$

• $m\ =\ -\frac{4}{5};\ \left(0,\ -5\right)$

• $m\ =\ -5\ ;\ \left(0,\ \frac{4}{5}\right)$

• $m\ =\ -\frac{5}{4}\ ;\ \left(0,-25\right)$

What is the slope and y-intercept:

4x - y = 4

• m = -1 ; (0,8)

• m = 4 ; (0,-4)

• m = -4 ; (0,4)

• m = 1 ; (0,4)

would the point on the number line be open or closed?

 $y\ >\ \frac{3}{2}x\ -\ 3$  

• open

• closed

would the point on the number line be open or closed?

 $y\ \le\ x\ +\ 5$  

• open

• closed

What are the solution? $\left|\frac{k}{5}\right|\ge2$  

•  $k\ \ge\ 10\ or\ k\ \le-10$  

•  $k\ \ge10\ or\ k\le-5$  

•  $k\ge5\ or\ k\le-10$