10-18 Algebra 1 Mastery Test Review

Which statement is true about the relation {(-2, 4), (4, 2), (2, 4), -4, 2)}?

• The relation is NOT a function because all the y-values are not different.
• The relation is NOT a function because all the x-values are not different.
• The relation is a function because the y-values are different.
• The relation is a function because all the x-values are different.

Tags

CCSS.8.F.A.1

What is the domain of the graph shown?

• -2 < y ≤ 6
• -6 ≤ x < -2
• -6 < y ≤ 6
• -6 < x ≤ 3

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5

Which situation is best represented by the
function f(x), where f(x) = 12x + 5?

• An office-supply store sells x boxes of
  ballpoint pens that contain a dozen pens
  per box for $5 each.
• An Olympic swimmer trains by
  swimming 12 kilometers on each of x
  weekdays and 5 kilometers on each day
  of the weekend.
• An algebra quiz has x problems worth
  12 points each plus 5 extra-credit
  problems worth 5 points each.
• A company sells x baseball caps for $12
  each and charges a $5 shipping fee.

Tags

CCSS.HSF.LE.B.5

The line by the equation $y-3=\frac{2}{5}\left(x-9\right)$  passes through which point?

•  $\left(-4,\ -7\right)$  

•  $\left(9,3\right)$  

•  $\left(4,\ 9\right)$  

•  $\left(-9,-4\right)$  

What is the correlation coefficient for the following table?

• .94

• .97

• 0

• .5

A certain function contains ordered pairs shown in the table above. What is the slope of the line that represents this function?

•  $-\frac{1}{2}$  

•  $\frac{1}{2}$  

•  $\frac{1}{3}$  

•  $-\frac{1}{4}$  

Tags

CCSS.8.EE.B.5

 $y=28+5.67\left(x-100\right)\ +50$  can be used to calculate the cost in dollars for data usage on a mobile phone with 100 minutes included for 50 dollars. What is the cost per minute with respect to the number of minutes?

• 50

• 28

• 5.67

• -100

Tags

CCSS.HSF.LE.B.5

Compare g(x) = x-5 to the parent function f(x) = x?

• The y-intercept is 5 units higher.

• The x-intercept is 5 units lower.

• The y-intercept is 5 units lower.

• The x-intercept is 5 units higher.

Mr. Dub had a garage sale last week. He got $50 from the sale of his pitching machine. He also started to tutor for $20 an hour. He decided to save all the money to buy candy for his classes. Which equation best represents the total savings, t, of Mr. Dub?

• $t=50x\ +20$

• $t=20x+50$

• $t=50x-20$

• $t=20x-50$

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

 $5-2x>-15$  Which inequality describes all the solutions?

•  $x>10$  

•  $x<10$  

•  $x>-10$  

•  $x<-10$