Question

please help!!! Write the equation of the line that is perpendicular to y= 1/4x and passes through the point (2,-5)

Answer 1

How do you find the slope that is perpendicular?

Answer 2

slopes s and s' are perpendicular if s*s' = -1

Answer 3

not sure @gypsy1274

Answer 4

If you draw each line on a graph, it will make an X. So, if the original slope is positive, what will be the sign of the perpendicular slope?

Answer 5

negative

Answer 6

Ok. So, You know that the slope will be negative. Will it still be 1/4? Draw a quick sketch.

Answer 7

wouldn't it be -1/4

Answer 8

No. Poor drawing skills, but it gives you a general idea.

Answer 9

@xoxox123

Answer 10

@Hero its wrong ??

Answer 11

y= 1/4x and passes through the point (2,-5)

If the line is perpendicular to the given line, then it will have a slope of -4 so

y = -4x + b

Now insert the point to find b:

-5 = -4(2) + b
-5 = -8 + b
8 - 5 = b
3 = b

So the new formula is

y = -4x + 3

Answer 12

Sorry, now it is correct.

Answer 13

no.. but 2 other people told me that answer too.

Answer 14

@Hero

Answer 15

Trust me, it is correct.

Answer 16

Hero's second answer is correct.

Answer 17

I only have one answer lol

Answer 18

Unless there is a typo in your question!

Answer 19

^What @mathmate said

Answer 20

Do you mean
y=(1/4)*x

Answer 21

I told you @xoxox123 ...we were not wrong

Answer 22

If the question is y=(1/4)x, and the point through which the perpendicular passes, then Hero is right.

Answer 23

(2,-5) is the point, I mean.

Answer 24

Its got to be the website xoxo123....you are getting the same answer from everyone

Answer 25

good idea :)