13 terms

bivariate data

Data with two variables

constant function

A linear function of the form y=b.

identity function

The function y=x.

inverse function

A function that can generate ordered pairs of an inverse relation.

inverse relation

A set of ordered pairs obtained by exchanging the x-coordinates with the y-coordinates of each ordered pair in the relation.

linear extrapolation

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

linear interpolation

The use of a linear equation to predict values that are inside the data range.

line of fit

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

parallel lines

Lines in the same plane that do not intersect and either have the same slope or are vertical lines.

perpendicular lines

Lines that intersect to form a right angle.

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 nonvertical line.

scatter plot

A 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.