Asked by CHRIS
Consider the line passing through two points P=(1,8) and Q=(−1,3). If the line also passes through point R=(15,a), what is the value of a?
Answers
Answered by
Reiny
slope PQ = (3-8)/(-1-1) = 5/2
slope PR = (a-8)/(15-1)
(a-8)/14 = 5/2
2a - 16 = 70
2a=86
a = 43
or
you could find the equation of the line passing through P and Q, then sub in the point R to find a
(you should get equation
5x-2y = -11
plugging in (15,a) yields the value of a = 43
slope PR = (a-8)/(15-1)
(a-8)/14 = 5/2
2a - 16 = 70
2a=86
a = 43
or
you could find the equation of the line passing through P and Q, then sub in the point R to find a
(you should get equation
5x-2y = -11
plugging in (15,a) yields the value of a = 43
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.