Unit 2 Assessment - Part 1 - Proportional Relationships

The table shows the number of cups of flour Carlos needs to make various numbers of scones. How many cups of flour does Carlos need for each scone?

• $\frac{1}{4}$

• $\frac{3}{4}$

• 3

• 4

 Alexis washes 10 $\frac{1}{2}$ windows in   $\frac{1}{3}$  of an hour. At this rate, how many windows can she wash in one hour?    

•  $30\ \frac{1}{2}$  

•  $3\ \frac{1}{2}$  

•  $31\ \frac{1}{2}$  

• 21

Belle works at a convenience store. The amount of money she earns is directly proportional to the number of hours she works. She is paid $432 for 18 hours of work. How much is Belle paid for 21 hours of work?

• $24

• $480

• $20.57

• $504

The graph shows Jason’s earnings based on the number of hours he works. What point on the graph represents Jason’s hourly pay rate?

• (0, 0)

• (1, 15)

• (2, 30)

• (3, 45)

Which graph represents a proportional relationship?

• Graph a

• Graph b

• Graph c

• Graph d

The cost of apples at a farm market is directly proportional to the number of pounds of apples purchased. Maxine paid $5.67 for a three pound bag of apples. If c represents the cost, in dollars, and p represents the number of pounds of apple purchased, which equation best represents this relationship?

• c = 5.67p

• c = 1.89p

• c = 3p

• c = 17.01p

A craft store sells fabric. The graph shows the relationship between the length of the fabric and the total cost of the fabric. Two points are labeled on the graph. What statement about the graph is true?

• Point W means that the unit rate is $24 per meter.

• Point W means that the unit rate is 3 meters per dollar.

• Point R means that the unit rate is $8 per meter.

• Point R means that the unit rate is one meter per dollar.

Candy apples cost $1.25 per pound. What equation is used to find c, the total cost of a pounds of candy apples?

• 1.25c = a

• c = a + 1.25

• 1.25 + c = a

• c = 1.25a

Over the break, your uncle and aunt ask you to help them cement the foundation of their newly purchased land and give you a top-view blueprint of the area and proposed layout. A small legend on the corner states that 4 inches of the length corresponds to an actual length of 52 feet. What is the scale factor?

• 1/13

• 13

• 1/156

• 156

You build a circuit and took measurements of current through the resistor and voltage across the resistor. The table below contains your results. There is a proportional relationship between current and voltage. Determine the current, in amps, of a resistor that has a voltage of 9.3 volts.

(a)