Horizontal and Vertical Lines
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m=0
What is the slope of a horizontal line?
m=undefined
What is the slope of a vertical line?
x=-2
Write the equation of the line.
x=3
Write the equation of the line.
y=1
Write the equation of the line.
y=5
Write the equation of the line.
m=y2-y1/x2-x1
slope formula
y=mx+b
slope intercept form