Vocabulary
What does additive inverse mean?
Two numbers that have a sum of zero.
(opposites)
Extra Points: Give an example of an additive inverse.
What rule do you use when subtracting integers?
Keep Change Change.
Extra Points: Give an example.
How do you convert a fraction to a decimal?
Divide the numerator by the denominator.
Extra Points: Give an example.
Which equation represents a proportional relationship?
A. y=7x-3
B. y= 150x
C. 21/x
D. 2x+1
B. y=150x
Extra Points: Explain why this equation represents a proportional relationship.
What are the two qualifications a graph must have in order to represent a proportional relationship?
1. Go through the origin
2. Straight line
Extra Point: What coordinate represents the origin?
What is a complex fraction?
Has a fraction in its numerator, denominator, or both.
Extra Points: Give an example of a complex fraction.
What rule do you use when dividing fractions?
Keep Change Flip.
Extra Points: Give an example
What is a terminating decimal?
A decimal that comes to an end.
Extra Points: Give an example of a terminating decimal.
What are three ways you can present a proportional relationship?
Tables, equations, and graphs
How do you calculate the constant of proportionality from a table?
k=y/x
What are equivalent ratios?
A set of two or more ratios that, when simplified, represent the same value.
Extra Points: Give an example of equivalent ratios.
When adding two numbers with the same sign, is your answer negative or positive?
Positive.
Extra Points: Give an example.
What is a repeating decimal?
A number that goes on forever with a pattern.
Extra Points: Give an example of a repeating decimal.
Are these fractions proportional?
20/30
40/60
60/90
Yes, they ARE proportional.
Extra Points: Give two more fractions that are proportional to the fractions stated.
(fractions given:20/30, 40/60, 60/90)
What equation do you use to represent a proportional relationship?
y=kx
Extra Points: What letter represents the constant of proportionality?
What is a rational number?
A number that can be written as a ratio of two integers.
Extra Points: Give 3 examples of a rational number. (each one is worth 150 pts)
What is the rule when adding two numbers with different signs?
Subtract and keep the sign of the bigger number.
Extra Point: Give an example.
Is 100/5 a terminating or repeating decimal?
(Must show work to receive the point)
Terminating.
Extra Points: You have 1 minute to come up with your own example!
Diego drives 110 miles in 2 hrs, 165 miles in 3 hrs, and 220 miles in 4 hrs.
Proportional
What is the constant of proportionality?
k= 12
Extra Points: Interpret the constant of proportionality based on the situation shown.
What is another name for the constant of proportionality?
Unit Rate
Extra Points: Give an example of a unit rate
What must you have when adding or subtracting fractions?
A common denominator.
Extra Points: You have 2 minutes to give an example of a problem that have unlike denominators and solve.
Is 5/18 a terminating or repeating decimal?
(Must show work to receive the point)
0.2777777...
Extra Points: You have 2 minutes to come up with your own example!
Does the table represent a proportional relationship?
NOT proportional
Extra Point: Using the same x values, write a new table that would represent a proportional relationship.
Sally collected 32 coins. The ratio of Sally's coins to Bill's coins is 4:7. How many coins does Bill have?
Bill has 56 coins.
Extra Points: Write a ratio that represents the ratio of Sally's coins to Bill's coins.