Question

the equation of line CD is y=3x-3. write an equation ofa line perpendicular to line CD in slope-intercept form that conatins point (3,1).

a) y=3x+0
b) y=-3x-8
c) y=-1/3x+2
d) y=1/3x +0

medal and fan will be given

Answer 1

@ganeshie8 hi can you help

Answer 2

@paki hey can you help me

Answer 3

@zepdrix hi can you help me please

Answer 4

ok so your like is currently in slope-intercept form (y=mx+b) m=slope so the slope of your original line would be what?

Answer 5

isnt the slope 3

Answer 6

yes perfect

Answer 7

so 3 can also be written as positive \[\dfrac{3}{1}\]

Answer 8

to find the slope of a perpendicular line, all you need to do is flip those and change the sign so it becomes negative \[\dfrac{1}{3}\]

Answer 9

so would it be -1/3x+2

Answer 10

from there, you can put in your two points into point slope form \[y-y _{1}=m(x-x _{1})\]

Answer 11

yes it would :)

Answer 12

thank you so much :)

Answer 13

sure thing :)