Algebra 2 Help? One multiple choice question. Thank you :)

What is the equation of the line perpendicular to the line y=4/9x -2 that passes through the point (4,3)?

A) y= -4/9x - 2
B) y= 9/4x + 6
C) y= -9/4x +12
D) y= -9/4x -12

Question

Algebra 2 Help? One multiple choice question. Thank you :)

What is the equation of the line perpendicular to the line y=4/9x -2 that passes through the point (4,3)?

A) y= -4/9x - 2
B) y= 9/4x + 6
C) y= -9/4x +12
D) y= -9/4x -12

otonogold · Answer

I think it is A ?

agent0smith · Answer

First: a perpendicular line must have a slope which is the negative reciprocal (ie flip the fraction, change the sign) of the original line's slope.

eg if the first line has slope  m = 2, the perp. line must have slope -1/2

What's the slope of your line,  y=4/9x -2 ?

otonogold · Answer

What about the (4,3) @agent0smith

otonogold · Answer

So A is the answer? @agent0smith

otonogold · Answer

@***[ISURU]*** ?