Write the equation for the perpendicular bisector of a segment that has endpoints (–1, 10) and (3, 6).

Question:

Write the equation for the perpendicular bisector of a segment that has endpoints (–1, 10) and (3, 6).

Question 11 options:

A) y = x + 7

B) y = –x + 9

C) y = x + 11

D) y = x – 7

the answer is B) y=-x+9

Step by Step Explanation:

let x and 400 - x be the two numbers.  

==> 0.80x + 0.85(400 - x) = 400 - 68 from the statement of the problem.  

< ==> 0.80x + 0.85(400 - x) = 400 - 68  

==> 340 - 0.05x = 332  

< ==> -0.05x = -8 ==> x = 160, the first number ==> 400 - x = 240, the second number.

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