Quiz on Lessons 4-5, 4-6, and 4-8
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14 Terms
What does m mean?
slope
What does b mean?
y-intercept
What is the slope-intercept form?
y=mx+b
What is the point-slope form?
y-y1=m(x-x1)
What are parallel lines?
A pair of coplanar lines that never intersect
What are perpendicular lines?
A pair of lines that intersect at a 90 degree angle
What is the notation for parallel lines?
a||b
What is the notation for perpendicular lines?
a⊥b
How is the slope between parallel lines?
It is the same
How is the slope between perpendicular lines?
It is opposite and reciprocal
Lines are parallel if
m1=m2 and b1≠b2
Lines are perpendicular if
m1⋅m2=-1
What is a perpendicular bisector?
A line that cuts a segment in half and creates a 90 degree angle with that segment
What is the midpoint formula?
((x1 + x2)/2, (y1 + y2)/2)
Note 
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