1. Today:
Review:
Radical Equations, Pythagorean Theorem,
Distance & Midpoint Formulas
Test Thursday on above concepts
Class Work
2. L
M
(-4, -9)
(5, 3)
How do we solve this
problem? Pythagoras?
Distance? Midpoint?
= 15
Distance = ( x2 - x1 )² + ( y2 - y1 )²
Find the length of
the line segment
LM below
3. Point M represents the midpoint of line segment VW.
What is the total length of VW?
From yesterday’s class work. Find
the missing coordinate given the
distance shown.
What is the relationship between the lengths 4x -1 and 3x + 3?
x = 3015; the length of VW is
4. A variation of the second type of midpoint problem.
Find the missing value of h in the points (5,7) and
(1,h) if its midpoint lies at (3, -2)
X1 + X2
2
= X MID
Y1 + Y2
2
= Y MID
5. The endpoints of RS are R(1,–3) and S(4, 2). Find
the coordinates of the midpoint M.
The coordinates
of the midpoint
(M) are (2.5, -.5)
6. What is the distance in
miles from Salinas to
Las Vegas? (Round to
nearest mile)
219 miles
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