Exploring Adding and Subtracting Rational Expressions

What is a proportion in mathematical terms?

• A type of mathematical operation

• An equation stating two ratios are equal

• A method for solving quadratic equations

• A formula for calculating area

How do you verify if two ratios form a proportion?

• By adding the ratios

• By dividing one ratio by the other

• By checking the cross product of the ratios

• By subtracting one ratio from the other

What is the result of cross multiplying 7/12 and 21/36?

• None of the above

• 250 = 250

• 252 = 250

• 252 = 252

Which of the following is NOT a proportion?

• 24/36 = 60/90

• 3/5 = 1.5/2.5

• 8/15 = 2/3

• 7/12 = 21/36

What is the first step in solving proportions?

• None of the above

• Subtract the constants from both sides

• Use the cross products property to set up an equation

• Divide both sides by the coefficient

If x/14 = 6/35, what is the value of x?

• 6

• 14

• 15

• 35

In the proportion 40/50 = 4/5, what is the value of y when 40*5 = 4*y?

• 40

• 50

• 10

• 20

What is the missing value in the ratio 6/20 = 15/x?

• 60

• 50

• 45

• 30

In a table comparing miles to time, if M/135 = 1.5/2.5, what is M?

• 108

• 81

• 135

• 54

What is the cost per ticket if 11 tickets cost $93.50?

• $9.50

• $10.50

• $11.50

• $8.50