Find the equation of a line through (1,1) which
isperpendicular to a line through (1,3) and (2,5).

Step-by-step explanation:

Point on a line is  (1,3) and (2,5).

slope of given line is 2

slope of perpendicular lines are negative reciprocal of one another

slope of perpendicular line is -1/2

slope = -1/2     (1,1)

add 1 on both sides

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.

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