Name: Date: MATH – Ms. Lee IS 230 – Class: Unit 2 Post Test Review Sheet Answer the following questions in your notebook to best prepare you for your upcoming Unit 2 Post Test. You must show all work to receive credit. 1) Which point could be removed from the set of points below so that the remaining four points represent a function in the coordinate plane? {(1,5), (2,-1), (2, 3), (3,5), (5,-2)} 2) Which mapping diagram represents a function? a) b) 3) Which graph does not represent a function? a) b) c) 4) Which table represents a function? a) b) X Y 1 5 2 1 3 11 2 5 5) Write an equation that represents the graph of the linear function below. 6) Which set of ordered pairs represents a lienar functio? a) {(-5,0), (-5,3), (-5,6), (-5,9)} b) {(-2,2), (0,4), (2,6), (4,9)} c) {(-5, -1), (-2, 0), (1,1), (4,2)} 7) Which equation does not represent a linear function? a) y = 3 – 5x b) y = x 3 + 2 c) y = 8x + 1 d) y = ½x + 9 8) The graph shows the distance that Shabana walked while training for a marathon. At one point, Shabana took a break at a rest stop. During which time hours did that occur? 9) Between which x-values is the interval increasing? 10) A school hosts a basketball game as a fundraiser. To attend the event, there is an entrance fee of $15. T-shirts are on sale at the fundraiser for $10 each. Graph the relationship between the total money and number of t-shirts sold. 11) Bill started a savings account in the beginning of January. He adds the same amount of money to the savings account each month. The table below shows the balance, y, in dollars, of the savings account at the end of each month, x. How much money did Bill start the savings account within the beginning of January? Months Feb March April May Balance ($) 460 575 690 805 12) To rent a limousine from Deluxe Limousines, a customer must pay a set fee plus an additional amount per hour, as shown by the graph. How much does the total charges increase by for every 2 hours? x Y 1 12 3 6 1 12 6 33
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Name: Date:
MATH – Ms. Lee IS 230 – Class:
Unit 2 Post Test Review Sheet
Answer the following questions in your notebook to best prepare you for your upcoming Unit 2 Post Test. You must show all work to receive credit. 1) Which point could be removed from the set of points below
so that the remaining four points represent a function in the coordinate plane? {(1,5), (2,-1), (2, 3), (3,5), (5,-2)}
2) Which mapping diagram represents a function? a) b)
3) Which graph does not represent a function? a) b) c)
4) Which table represents a function? a) b)
X Y 1 5 2 -‐1 3 -‐11 2 5
5) Write an equation that represents the graph of the linear function below.
6) Which set of ordered pairs represents a lienar functio? a) {(-5,0), (-5,3), (-5,6), (-5,9)} b) {(-2,2), (0,4), (2,6), (4,9)} c) {(-5, -1), (-2, 0), (1,1), (4,2)}
7) Which equation does not represent a linear function? a) y = 3 – 5x b) y = x3 + 2 c) y = 8x + 1 d) y = ½x + 9
8) The graph shows the distance that Shabana walked while training for a marathon. At one point, Shabana took a break at a rest stop. During which time hours did that occur?
9) Between which x-values is the interval increasing?
10) A school hosts a basketball game as a fundraiser. To attend the event, there is an entrance fee of $15. T-shirts are on sale at the fundraiser for $10 each. Graph the relationship between the total money and number of t-shirts sold.
11) Bill started a savings account in the beginning of January. He adds the same amount of money to the savings account each month. The table below shows the balance, y, in dollars, of the savings account at the end of each month, x. How much money did Bill start the savings account within the beginning of January?
Months Feb March April May Balance ($) 460 575 690 805
12) To rent a limousine from Deluxe Limousines, a customer must pay a set fee plus an additional amount per hour, as shown by the graph. How much does the total charges increase by for every 2 hours?
x Y 1 12 3 -‐6 1 12 6 -‐33
13) To rent a limousine from Deluxe Limousines, a customer must pay a set fee plus an additional amount per hour, as shown by the graph. What is the set fee that the limousine rental charges each client?
14) The graph below shows the total cost, in dollars, of filling in gas for a car for x days. What is the rate per gallon?
15) Sandra and Emil are both house painters, and each charges an hourly rate for a painting job. The equation y = 15x shows the total charge, y, in dollars for hiring Sandra to paint a house for x hours. The table below shows the same information for Emil. What conclusion can you make about their hourly rates? Emil’s Charges
X 3 6 9 12 Y 45 90 135 180
16) The table and the graph below represent two different linear relationhips. Compare the y-intercepts.
17) Graph the equations
a) y = 3x – 2 b) y = !
!𝑥 + 3
18) Given the equation 𝑦 = −2𝑥, determine the slope and y-intercept. Does the line rise or fall from left to right?
19) Marco has a paper route. He is paid $20 each week and $0.15 for each paper he delivers. Write an equation that shows the relationship between the number of papers he delivers and his income for one week.
20) If a line contains the points in the table below, the equation of the line is:
21) A reporter collected data on y, the current market value, in dollars, of a certain car for various years, x, after it had been purchased new. The equation below was fit to the data.
𝑦 = 18,000 − 2,000𝑥
a) What does the slope of the graph of this equation represent?
b) What does the y-intercept of the graph of this equation represent?
22) Write an equation of a function that is not linear. Explain why it is not linear.
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