Busy. Please wait.

Forgot Password?

Don't have an account?  Sign up 

show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.

By signing up, I agree to StudyStack's Terms of Service and Privacy Policy.

Already a StudyStack user? Log In

Reset Password
Enter the email address associated with your account, and we'll email you a link to reset your password.

Remove ads
Don't know (0)
Know (0)
remaining cards (0)
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards

Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Chapter 1

Ratio and Proportional Reasoning

Rate A ratio that compares two quantities with different kinds of units Ex: boys to girls, dollars to pounds, miles per hour
Unit Rate when a rate is simplified so it has a denominator of one unit ex: $24/6bottles = $4 per bottle or $4/1 bottle
Complex fractions fractions with a numerator, denominator or both that are also fractions
Dimensional Analysis the process of including the units of measure as factors when you compute
Proportional if two quantities have a constant ratio or unit rate
Non-proportional two quantities where the relationship is not constant
Equivalent ratios ratios that have the same value ex: 4/10 = 12/30 = 2/5
Coordinate plane a type of grid that is formed when two number lines intersect at their zero points.
Quadrants The four regions formed when the number lines intersect at their zero points
Ordered pair a pair of numbers used to locate or graph points on the coordinate plane ex: (3, -2)
Proportion an equation stating that two ratios or rates are equivalent.
rate of change a rate that describes how one quantity changes in relation to another
constant rate of change (slope) if the rate of change between any two quantities is the same (m = change in y over change in x)
slope (constant rate of change) the constant rate of change (m = change in y/change in x)
Direct Variation (pre-algebra only) when two variable quantities have a constant ratio
Constant of Variation (constant of proportionality) - pre-algebra only the constant ratio y=kx The "k" is the constant of proportionality or constant of variation
similar figures - pre-algebra only two polygons where their corresponding angles are congruent and their corresponding sides are proportional
scale - pre-algebra only determined by the ratio of a given length on a drawing or model to its corresponding actual length
scale factor - pre-algebra only a scale written as a ratio without units in simplest form
indirect measurement - pre-algebra only when distances or lengths are difficult to measure directly you use the properties of similar polygons and proportions
Created by: msdigits