SOLUTION: 20. Write the equation of the line which has y-intercept (0, 5) and is perpendicular to the line with equation y = –3x + 1. A) y = –3x + 5 B) y = x + 5 C) y = 3x + 5 D) y = –

Algebra ->  Graphs -> SOLUTION: 20. Write the equation of the line which has y-intercept (0, 5) and is perpendicular to the line with equation y = –3x + 1. A) y = –3x + 5 B) y = x + 5 C) y = 3x + 5 D) y = –       Log On


   

Question 106639: 20. Write the equation of the line which has y-intercept (0, 5) and is perpendicular to the line with equation y = –3x + 1.
A) y = –3x + 5
B) y = x + 5
C) y = 3x + 5
D) y = – x + 5
Answer by elima(1433) About Me  (Show Source):
You can put this solution on YOUR website!
Write the equation of the line which has y-intercept (0, 5) and is perpendicular to the line with equation y = –3x + 1.
Perpendicular lines have slope that are negative reciprocals.
So the slope of the new line= 1%2F3
%28-5%29=%281%2F3%29%28-0%29%2Bb
%28y-5%29=b
y=5
y=%281%2F3%29x%2B5
:)
graph+%28300%2C300%2C+-6%2C6%2C-6%2C6%2C+-3x%2B1%2C+%281%2F3%29x%2B5%29