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Algebra 1 Vocab (Graphing Lines)

Terms in this set (18)

coordinate plane
the plane containing the x- and y-axes
x-axis
the horizontal number line on a coordinate plane
y-axis
the vertical number line on a coordinate plane
origin
the point where the x- and y-axes intersect at their zero points
ordered pair
a set of numbers or coordinates used to locate any point on a coordinate plane, written in the form (x,y)
x-coordinate
the first number in an ordered pair
y-coordinate
the second number in an ordered pair
relation
a set of ordered pairs
function
a relation in which each element of the domain is paired with exactly one element of the range
x-intercept
the x-coordinate of a point where a graph crosses the x-axis
y-intercept
the y-coordinate of a point where a graph crosses the y-axis
linear equation
an equation in the form Ax+By=C, with a graph that is a straight line
linear function
a function with ordered pairs that satisfy a linear equation
rate of change
how a quantity is changing with respect to a change in another quantity
slope
the ratio of the change in the y-coordinates (rise) to the corresponding change in the x-coordinates (run) as you move from one point to another along a line
slope-intercept form
an equation of the form y=mx+b, where m is the slope and b is the y-intercept
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
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