Benchmark Algebra 1 - Corrections

Benchmark Algebra 1 - Corrections

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Multiple Choice

 $-5x\ -8\left(1+7x\right)\ =\ -8$  

•  $x\ =\ 1$  

•  $x\ =\ 0$  

•  $x=\ 6.1$  

•  $x\ =\ -61$  

Multiple Choice

Factor completely:
 $9x^2+12x+4$  

•  $\left(9r-2\right)\left(9r+2\right)$  

•  $\left(3r-2\right)\left(3r+2\right)$  

•  $\left(3r+2\right)^2$  

•  $\left(9r+2\right)^2$  

Multiple Choice

• 52
• 26
• 208
• 2

Multiple Choice

Find the equation of the line that passes through the points:
(-4, -2) and (-3, 5)

• y = ¹/₇ x + 26
• y = 7x + 26
• y = -7x + 26
• y = -7x - 26

Multiple Choice

Add or Subtract to Simplify:
 $\left(4n^4-8n+4\right)-\left(8n^2+4n^4+1\right)$  

• -8n² - 8n + 3 

• -7n² - 8n + 3 

• -6n² - 8n + 3

• -7n² - 4n + 3

Multiple Choice

Select the correct graph for each inequality.

• A
• B
• C
• D

Multiple Choice

Identify the y-intercept (initial value) in the function f(x)=13(.27)^x

• (.27)^x
• .27
• 13
• 3.51

Multiple Choice

• $y=-2x+9$

• $y=-\frac{1}{2}x+9$

• $y=9x-18$

• $y=-\frac{1}{2}x$

Multiple Choice

Solve using substitution.

• (5, 4)
• (4, 5)

Multiple Choice

What is the rate of change of the relationship represented by the table above?

• 75 dollars per adult

• 0.013 dollars per adult

• 1/75 dollars per adult

• None of the above

Multiple Choice

Which relation is not a function?

• {(1,-5), (3,1), (-5,4), (4,-2)}

• {(2,7), (3,7), (4,7), (5,8)}

• {(1,-5), (-1,6), (1,5), (6,-3)}

• {(3,-2), (5,-6), (7,7), (8,8)}