Segment DE with slope -2 is perpendicular to segment EF with slope 1/2. The triangle is a ...
C. right triangle
16b +5c -10 -8c +2b
18b - 3c -10
1st Question:
1/6, 2/6, 3/6 = 1/2, 4/6, 5/6, 6/6.
Halfway between 1/2 and 5/6 is 4/6 = 2/3.
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2nd Question: Could've been worked out on a calculator.
-5/6, -7/9, -3/5, -3/7