SHSAT Questions on Percentages and Proportional Relationships

Which equation shows a propotional relationship?

• x = ky

• x = ky + m

• y = kx

• y = kx =m

Which equation shows a proportional relationship?

• y = 5x + 9

• x = 5y - 10

• y = 5x

• x = 5y + 48

Which coordinate represents "k" or "COP"?

• (1,18)

• (2,36)

• (3,54)

• (4, 72)

Write an equation to represent the relationship between coffee(lb) and cost ($).

• y = 1/3x

• y = 3x

• x = 3y + 1

• x = 1/3y - 1

Write an equation that represents this graph?

• y = 15x

• y = 18x

• y = 54x

• y = 72x

Does the graph show a proportional relationship? 

• No, it's a curved line

• No, it's a pretty line

• Yes, if you connect the line, it is kind of straight.

• Yes, the dots are pink

Diego measured the length of a pen to be 22 cm. The actual length of the pen is 23 cm. Which of these is closest to the percent error for Diego’s measurement?

• 4.3%

• 4.5%

• 95.7%

• 104.5%

Today, everything at a store is on sale. The store offers a 20% discount.

The regular price of a T-shirt is $18. What is the discount price?

• $3.60

• $21.60

• $14.40

• $18.00

Today, everything at a store is on sale. The store offers a 20% discount.

The discount price of a hat is $18. What is the regular price?

• $3.60

• $14.40

• $22.50

• $32.40

Today, everything at a store is on sale. The store offers a 20% discount.

If the regular price of an item is x dollars, what is the discount price in dollars?

• 0.8x

• x - 0.2x

• x-20

• 0.2x