Algebraic Relationships of Two Variables

Which of these equations represent the table above if the number of tickets represents x and the total cost represents y?

• y=2x

• y=54x

• y=27x

• y=x

Which equation matches the description if x is the number of minutes and y is the total cost.

• y = 1.20

• y= 1.20x

• x = 1.20

• x = 1.20y

The graph shows the total money earned at a fundraising car wash. Which equation can be used to find the total earned y for the number of cars washed x?

• y = x + 5

• y = x/5

• y = x - 5

• y = 5x

Which equation matches the table?

• y = 2x

• y = 2x+3

• y = 3x+3

• y = 3x+2

The equation y=16x represents the number of sit ups Adam will do in "x" sets. How many sit ups does Adam do in 4 sets?

• 4

• 20

• 48

• 64

The cost of downloading one song from a website is $0.99.
Which equation can be used to find t, the cost in dollars of downloading n songs?

• t = 0.99n

• t = n + 0.99

• n = 0.99t

Gourmet chocolate costs $5.25 per pound. Which equation best represents y, the total cost of x pounds of chocolate?

• x = 5.25y

• y = 5.25 + x

• y = 5.25x

• x = 5.25 +y

Mrs. Khan makes cookies for the school bake sale. She uses the equation c = 0.75x to determine the cost, c for x cookies. which best represents the constant rate at which cookies are sold at the bake sale?

• 75 cookies per dollar

• $1.50 per cookie

• 1.5 cookies per dollar

• $0.75 per cookie

Based on the graph, what is the constant rate of earnings for scholarships? (How much was raised per month?)

• $500 per month

• $1,000 per month

• $2,000 per month

• $4,000 per month

Which equation represents the table of values?

• y = 400

• y = 400x

• y = x + 400

• y = 400x + 800