Question

What is the equation of the line in slope-intercept form? the line perpendicular to

y = 1/3x + 5 through (2, 1)
A. y = 1/3x + 7

B. y = -1/3x + 7

C. y = 3x + 7
D. y = -3x + 7

Answer 1

@alexwright 15 for me 6 for you

Answer 2

B is wrong

Answer 3

@geerky42

Answer 4

@DJ♬Øϟϟ¥

Answer 5

You know what slope of that line?

Answer 6

only one option has correct slope

Answer 7

Hm

Answer 8

The slope is 1/3 lol so the answer is A

Answer 9

let us say slope of original line is m.

So slope of line perpendicular to that original line should be \(-\dfrac{1}{m}\)

Answer 10

original slope is 1/3, but that's not slope of perpendicular line.

Answer 11

Ohhh ok

Answer 12

You my good sir, deserve a medal

Answer 13

ok, so m = 3. do you know what the new slope is?

Answer 14

m = 1/3*

Answer 15

so that would be A? @geerky42

Answer 16

none

Answer 17

That's not a choice one of these has to be right

Answer 18

slope of line that is perpendicular to line with slope m is \(-\dfrac{1}{m}\)

Answer 19

so basically you flip the fraction and make it negative.

Answer 20

So it would be B

Answer 21

Right? :P

Answer 22

i think d is right ans.
because if two lines are perpendicular then always the product of their slops =-1

Answer 23

D?

Answer 24

Oh crap I typed B D:

Answer 25

you made it negative, but you didn't flip the fraction :P

Answer 26

No B is wrong

Answer 27

yep. D would be the answer.

Answer 28

@HeyoKai

Answer 29

Finally!
lol thanks geerky42 you're the best ! ^_^

Answer 30

no problem!

Answer 31

lol she said you tried

Answer 32

Lol

Answer 33

he*

Answer 34

I'm male lol

Answer 35

Lol xD

Answer 36

lol he sorry it's the picture