Algebra 2 Semester 1 Review

Evaluate using the values given

 $z\left(z-y\right)-y;\ \ \ \ use\ y=10,\ and\ z=7$  

• -38
  

• -31

• -29

• -21

Solve the inequality (on the final you will also need to graph)

 $\left|x-9\right|\le9$  

•  $-6<x\le4$  

•  $0\le x\le18$  

•  $x<-6\ or\ x\ge4$  

•  $-27\le x\le9$  

Write the equation in slope-intercept form for the line that passes through (4, 3) and is parallel to

 $y=\frac{1}{4}x$  

•  $y=-4x+19$  

•  $y=\frac{1}{4}x+3$  

•  $y=2x+\frac{1}{4}$  

•  $y=\frac{1}{4}x+2$  

Choose the graph of the system of inequalities

 $y>-2x-1$ 
  $y\le-\frac{1}{2}x+2$  

• 
• 
• 
• 

Solve the system of equations

 $-7x-3y=-9$  
 $7x+3=-3y$  

• no solution

• (-2, 2)

• (2, 2)

• infinitely many solutions

Solve the system of equations
 $-x+8y=20$  

 $10x+16y=-8$  

• (-2, 4)

• (-4, 2)

• (4, 2)

• (4, -2)

Solve the system of equations
 $-x-2y=-20$  
 $y=7$  

• No solution

• (-6, -7)

• (6, -7)

• (6, 7)

Find the inverse of the matrix.

• 
• No inverse exists

• 
• 

Simplify

• 
• undefined

• 
• 

Simplify

• 
• undefined

• 
•