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25 Cards in this Set

  • Front
  • Back
linear equation for a vertical line is
x=a number
ex. x=4
linear equation for a horizontal line is
y=a number
ex. y=7
x intercept is where the line crosses the
x-axis
the order pair for x-intercept will be
(x,0)
y-intercept is where a line crosses the
y-axis
slope is identified as
rise over run, change in y over change in x, m=y2-y1
x2-x1
a line has a ______ slope if it rises from left to right
positive
a line has a ______ slope if it falls from left to right
negative
vertical lines have ______ slope (no slope)
undefined
horizontal lines have _____ slope
0
a slope of 0 over a number represents a _____ line
horizontal
slope intercept form is
y=mx+b
m=slope
b=y intercept
you get slope intercept form by solving any equation for
y
Point-slope form is
y-y1=m(x-x1)
y=variable
y1=y cordinate
m=slope
x=variable
x1=x cordinate
standard form is
ax+by=c
slope is -a over b
y-intercept is c over b
a is always with
x
b is always with
y
youcan find the _____ by substituting 0 for y and solve for x
x-intercept
you can find the _____ by subtituting 0 for x and solving for y
y-intercept
slope is the opposite of _____ (in standard form)
a over b
c over b in standard form is
y-intercept
y=4x-1 is a example of a linear equation in
slope intercept form
the linear equation 3x+4y+12 is in
standard form
a number over 0 represents the slope of a _____ line
vertical
what is the formula for slope
m=y2-y1
x2-x1