12 terms

perpendicular lines

two lines whose slopes are negative reciprocals of each other

bivariate data

data with two variables

parallel lines

two lines that have the same slope

rate of change

measures how a quantity changes with respect to a change in another quantity, also known as slope

linear regression

an algorithm to find a precise line of fit for a set of data

correlation coefficient

the number that describes how closely a best-fit line models a set of data

best-fit line

the line that most closely approximates the data in a scatter plot

linear extrapolation

the use of a linear equation to predict values that are outside the range of data

line of fit

a line that describes the trend of the data in a scatter plot

point-slope form

an equation of the form y-y1=m(x-x1), where m is the slope and (x1,y1) is a given point on a non-vertical line

scatter plot

shows the relationship between a set of data with two variables, graphed as ordered pairs on a coordinate plane

slope-intercept form

an equation of the form y=mx+b, where m is the slope and b is the y-intercept