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Chapter 7 Math Vocabulary

Terms in this set (23)

coordinate axes
the x- and y-axes in the coordinate plane
coordinate plane
a plane in which a coordinate system has been set up
coordinates
the numbers in an ordered pair, used to locate a point on a plane
graph of an equation
the graph of an equation consists of all the points whose coordinates satisfy the equation
graph of an ordered pair
the point on the coordinate plane that corresponds to the ____ pair
line of best fit
the line that best approximates a linear relationship for a set of a data points
linear equation
an equations whose graph is a line. An equation is linear if the variables occur to the first power only, there are no products of variables, and no variable is in the denominator.
origin
The point in which the axes of a plane or graph cross; the point (0,0) in the Cartesian coordinate system
parallel lines
lines in the same plane that never intersect
perpendicular lines
two lines that intersect to form right angles
point-slope equation
a non vertical line that contains a point (x1,x2) and has slope m has a point-slope equation y-y1=m(x-x1)
quadrant
one of the four regions into which coordinate axes divide a plane
rise
the difference between the y-coordinates of two points; used to determine the slope of a line
run
the difference between the x-coordinates of two points; used to determine the slope of a line
slope
a number that tells how steeply a line slants; the ratio of rise to run
slope-intercept equation
a line with slope m and y-intercept b has a slope-intercept equation y=mx+b
standard form of a linear equation
the standard form of a linear equation is Ax+By=C where A,B,C are constants and A and B are not both 0
x-axis
the horizontal axis or number line in a coordinate plane
x-coordinate
the first number in an ordered pair used to locate a point on a plane;also called the abscissa
x-intercept
the x-coordinate of the point where a graph intersects the x-axis
y-axis
the vertical axis or number line in a coordinate plane
y-coordinate
the second number in an ordered pair used to locate a point on a plane; also called the ordinate
y-intercept
the y-coordinate of the point where a graph intersects the y-axis
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