22 terms

Math Vocabulary for Linear Equations and Functions

Math 8 Chapters 2 & 3 Big Ideas in Learning
STUDY
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function
a special type of relation that pairs each input value with exactly one output value
domain
the set of all possible input values of the ordered pairs of a relation
range
the set of all possible output values of the ordered pairs of a relation
independent variable
represents the input of a function
dependent variable
represents the output of a function
discrete domain
a set of input values that consists of only certain number in an interval (ex: integers)
continuous domain
a set of input values that consists of all numbers in an interval (ex: real numbers)
linear function
a function whose graph is a line
non-linear functions
equation with a graph that is not a straight line
linear equation
An equation whose graph is a straight line.
solution to a linear equation
a line consisting of points on a graph that solve a linear equation
slope
the ratio the change of the vertical (y) coordinate to the change in the horizontal (x) coordinate.
x-intercept
the point where the graph of an equation crosses the x-axis
y-intercept
The point where the graph of an equation crosses the y-axis.
y-intercept
In a linear equation of the form y=mx+b, the constant b is the ___?.
slope
In a linear equation of the form y=mx+b, the constant m is the ___?
slope-intercept form
a linear equation written in the form y=mx+b where m is the slope and b is the y-intercept of the equation's graph
standard form of a linear equation
ax + by =c
quadrant
one of four regions created by the x-axis and y-axis in a coordinate plane
ordered pair
a pair of numbers that can be used to locate a point on a coordinate plane
origin
the point (0,0) where the x-axis and y-axis intersect on the coordinate plane
coordinate plane
a plane formed by the intersection of the x-axis and y-axis