Question

Help Please!!
CD s perpendicular to AB and passes through point C(5, 12).
If the coordinates of A and B are (-10, -3) and (7, 14), respectively,
the x- intercept of CD is(12,0),(15,0),(17,0),(19,0)
The point (-5,24)(-2,19)(7,-10)(8,11) lies on CD

Answer 1

What's the question? What are you trying to find?

Answer 2

Please post the question as it appears in your text. Thanks.

Answer 3

The rest doesnt really make sense

Answer 4

Its a two part question.
A and B are (-10, -3) and (7, 14),
the x- intercept of CD is ?
these are my choices: (12,0),(15,0),(17,0),(19,0)
The second part of the question is :
What point lies on CD?
these are my choices:
(-5,24),(-2,19),(7,-10),(8,11)

Answer 5

When I draw it out on graph paper the only one I see working would be points (19,0) and point (-2, 19). if you graph a line in passes through point (5,12), is this correct?

Answer 6

Is there an equation I can do to fiqure this out? I'm pretty sure there is but I can't remember.

Answer 7

>>>the x- intercept of CD

I don't know what this means.

If you could post the question exactly as it appears in your text, it would be helpful.

Answer 8

I did at the top when I posted the question

Answer 9

ok give me a min

Answer 10

@dayakar can you help me please?

Answer 11

find the slope of a line AB = m1 = (y2-y1)/ (x2-x1)


can u do that?

Answer 12

ok give me a min

Answer 13

the slope is 1

Answer 14

what happens?

Answer 15

very good

Answer 16

m=1

Answer 17

slope of a line CD which is perpendicular to AB = m2 = 1/m1 = -1

is it clear

Answer 18

m2 = -1/m1 = -1

Answer 19

so I have to find the slope of 1 for CD

Answer 20

do u understand

Answer 21

now we going to find equation of a line CD,
whose slope (m2) =-1 and which is passing through C(5,12) =(x1, y1) is

y-y1 = m2 (x-x1)

can u write equation

Answer 22

ok give me a min

Answer 23

m=(19-(0)/(-2-(17)

Answer 24

(17,0) and (-2,19)

Answer 25

there is no need of find m
we know m2 = -1

Answer 26

y- y1 = m2 (x-x1) [ m2=-1, (x1,y1) = (5,12) ]

Answer 27

y- 12 = -1 (x-5)

Answer 28

can u simplify it

Answer 29

x=17

Answer 30

y-12 = -x +5

x+y = 12+5
x+y = 17-------(1)

if u understand this we can easily find the answers

Answer 31

do u understand or not

Answer 32

no I'm sorry

Answer 33

what is ur doubt

Answer 34

I understand your equation above but don't understand how to apply it

Answer 35

1) to find x- intercept plug y=0 in equation (1)

now what is the x value?

Answer 36

-2

Answer 37

x+y =17 ----(1)

x+0 =17 [ since y=0 ]

x= 17

required point = (x ,y ) = (17 ,0)

Answer 38

is it clear

Answer 39

yes I got 17,0. I thought i was trying to figure out where the point lies

Answer 40

can we move to second one

Answer 41

yes please

Answer 42

sorry it is not C ,
i want to draw rough diagram where the point (17,0) lie

Answer 43

2) it is very simple,
do u have any idea

Answer 44

no sorry

Answer 45

x+y =17 -----(1)

check all the options
add x and y which equals to 17 that is the answer

Answer 46

-2,19

Answer 47

-2+19 =17

Answer 48

excellent ,
that's it

Answer 49

omgosh thank you

Answer 50

:)

Answer 51

i made myself crazy with this

Answer 52

my graph is wrong remove it , it is not important here

Answer 53

once again go through it , u can get the concept
good luck

Answer 54

I can't remove graph I think only you can. Thanks so much for helping me.

Answer 55

did someone else give you the medal? I went to give you one and it was already clicked. Crazy. lol

Answer 56

I guess it was me thanks again!!!