Algebra Midterm Exam Review

Is this table a function?

• Yes. Each x has only one y.

• No because x = 3 has two outputs.

Is this graph a function?

• Yes, passes vertical line test.

• No, fails vertical line test.

• No, fails horizontal line test.

• Yes, passes horizontal line test.

Evaluate.
 $\left(\frac{2}{5}\right)^{-1}$  

•  $\frac{5}{2}$  

•  $-\frac{2}{5}$  

• 25

• 4

(3x⁴y³z⁵)³

• 12x¹²y⁹z¹⁵
• 9x¹²y⁹z¹⁵
• 3x¹²y⁹z¹⁵
• 27x¹²y⁹z¹⁵

Solve for x.

3x - x + 2 = 4(2x - 1)

• infinite solutions

• x = 1

• x = -1

• no solution

Multiply using a generic rectangle.

(3x − 6)(7x + 7)

• 21x² − 63x + 42

• 21x² − 21x − 42

• 21x² − 42

• 21x² + 63x + 42

Multiply using a generic rectangle.

 $\left(5x+2\right)\left(x^2-3x+6\right)$  

•  $5x^3-17x^2+24x+12$  

•  $5x^3+17x^2-24x+12$  
  

•  $5x^3-13x^2+24x+12$  

•  $5x^3+13x^2-24x+12$  
  

Fill in the missing numbers.

• 3, 4

• 2, 6

• -4, -3

• -6, -2

Find the slope of the line.

Find the slope of the line.

• Undefined
• 0
• 1
• -1