Math Functions
Unit 2
Unit 3
100
What math function do you use to find the sum?
Addition
100
What is the point (0,0) called?
The origin
100
What does percent mean?
A ratio that compares a number 100
200
What math function do you use to find the difference?
Subtraction
200
Define proportion - use words or an example
An equation stating two ratios are equivalent.
a/b = c/d
200
What is the difference between repeating decimals and terminating decimals?
Repeating decimals have one or more digits in a pattern that repeats forever.
Terminating decimals end.
300
What is the difference between an expression and an equation? Give an example.
An equation is a mathematical sentence that contains an equal sign between two expressions
expression: 5 + 7
equation: 5 + 7 = 12
300
What is the constant of proportionality?
The ratio between two directly proportional quantities
The unit rate
(y/x)
300
How do you set up a percent proportion?
%/100 = "part"/"whole"
%/100 = "is"/"of"
400
What does it mean to simplify a fraction?
Answer in words or give an example
To reduce a fraction by dividing the numerator & denominator by their GCF.
400
What 2 things have to be true for a graph to be proportional?
1. Straight line
2. Goes through the origin
400
Define: percent of change.
The percent a quantity increases or decreases compared to the original number.
500
50 miles / hours
What word do we use for the
" / " symbol?
per
500
Write the equation of a line with a COP of 4
y = 4x
500
What is the difference between a markup and a discount?
Markups increase the price, discount lowers the price.