graph is a line
linear function
represents linear function y=3x+2
linear equation
y depends on x, y is called
dependent variable
x is called
independent variable
the point at which the line crosses the y-axis
y-intercept
the point at which the line crosses the x-axis
x-intercept
Ax+By=C
standard form of a linear equation
nonvertical line is the ratio of the vertical change to a corresponding horizontal change
slope
when you know a slope and a point you can use this to write an equation
point-slope form
another form of the equation of a line is this, which you can use to find slope by examining the equation
slope-intercept form