229k views
2 votes
Write an equation of the line that is perpendicular to 5x + 20y = 10 and passes through the point (8, 3).

1 Answer

3 votes
Given line ax+by=c and point (h, k), the perpendicular line through (h, k) can be written as
b(x-h) -a(y-k) = 0

In order for this to be in standard form, it must be rearranged somewhat, and any common factors removed.

We can start with
20(x-8) -5(y-3) = 0
4x -32 -y +3 = 0
4x -y = 29

The standard-form equation of the desired line through (8, 3) is
4x -y = 29
Write an equation of the line that is perpendicular to 5x + 20y = 10 and passes through-example-1
User Ryan Castner
by
8.9k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories