Question

A line has a slope of 3 and contains the point (−1, −8).

Which equations represent the line?

Choose all answers that are correct.

A.
−3x + y = −5

B.
3x + y = −5

C.
(y – 8) = 3(x − 1)

D.
(y + 8) = 3(x + 1)

Answer 1

Put this into point slope form first.

(y-y1)=m(x-x1)

Answer 2

Just about to say that :)

Answer 3

D. (y + 8) = 3(x + 1) will definitely one of them, now distribute the parenthesis and see what other answers work.

Answer 4

IF they work at all..

Answer 5

a straight line always has an equation in the form
y=mx+b

where m is the slope

so
in your case
y = 3x +b

and you know that when x=-1 then y= -8

so you can find b from that equation

Answer 6

im thinking the answer is d but i m never sure

Answer 7

The definite answer is D.

Answer 8

There is one more I believe

Answer 9

okay thx guys

Answer 10

let me check

Answer 11

Hold on.......

Answer 12

Stay put..

Answer 13

it says Choose all answers that are correct.

Answer 14

If you distribute out (y + 8) = 3(x + 1)

you get y+8=3x+3

Answer 15

One other answer represents that.

Answer 16

Not in the exact form

Answer 17

the correct ANSWER is
use the above formula and work it out yourself.

IF you take other people#'s direct answers you cannot know they are right, and you learn nothing

Answer 18

I'll give you a hint.

y+8=3x+3

Isolate the x and y's to one side, and the whole numbers to another

Answer 19

Ha. yep.

Answer 20

wait im thinking the right answesr D C and A right?

Answer 21

exactly, you have to rearrange the equation. what will you get?

Answer 22

It can't be C.

C. (y – 8) = 3(x − 1)

That's just the incorrect way to plug into the point slope formula.

Answer 23

Don't guess. Math is not a guessing subject. There are always definite answers.

Answer 24

so AB and D?

Answer 25

@jordanloveangel
it CANNOT be C & D - they have different sign for +/- 8 in th esdame form of equaiton

Answer 26

this is so confusing

Answer 27

Not if YOU work through it methodically, instead of reading all th eposts and guessing

Answer 28

@MrNood

It can't be D?

Answer 29

im so condusing oh how 2 slove and get the answer

Answer 30

I said it cn't be C AND D, not thast it can't be C OR D

Answer 31

How is not D?

Answer 32

??????

Answer 33

I didn't say that it's not D

the OP guessed a,c AND D
I said that it cannot be BOTH C and D because they are conflicting

Answer 34

Oh, that clears it up.

Answer 35

okay then wuts the right answers

Answer 36

@paki

Answer 37

as I said above - the right answer is 'use the formula to work it out'

anything else is someone else's answer and you cannot know if they have just guessed like oyu

Answer 38

@AlexandervonHumboldt2 can u help me plase

Answer 39

yes

Answer 40

y=-1/2x+3 like i said earlier
B C D

Answer 41

you posted the same queston

Answer 42

wait wrong question

Answer 43

A line has a slope of 3 and contains the point (−1, −8).

Which equations represent the line?

Choose all answers that are correct.

A.
−3x + y = −5

B.
3x + y = −5

C.
(y – 8) = 3(x − 1)

D.
(y + 8) = 3(x + 1)

Answer 44

this is my question

Answer 45

so -8=3*-1+b
b=11
y=3x+11 slope intersept let me finish

Answer 46

so convert ech other equation and chck if othrs will b eual to this

Answer 47

okay so is the answer A ,BandD

Answer 48

yes should be

Answer 49

kk thank yoou verrrryyyyyyyyyyyyy much

Answer 50

ok

Answer 51

@jordanloveangel that is NOT coorect

Answer 52

dude when wut the hell is the right dam answer

Answer 53

look at B
3x+y=-5

the point x=-1, y=-8 is on the line

if oyu put x=-1 and y=-8 into equation B it is not correct

Answer 54

Wouldn't it be -3+y=-5, because one you have the equation after distributing, you move the 3x.

Answer 55

@csheveland WHAT?

Answer 56

sorry -3x+y=-5

Answer 57

@jordanloveangel
Surely you can see from th efiasco above that the BEST ooption is to understand the problem and solve it for yourself.
Do you want help with equations of straight lines?

Answer 58

nvm i got the answers

Answer 59

@jordanloveangel
and what do you NOW think are the correct ones (there are 2 only...)

Answer 60

the right answers r a and d

Answer 61

@AlexandervonHumboldt2

Answer 62

@Loser66

Answer 63

A

Answer 64

@Loser66 there r 2 right answers

Answer 65

D

Answer 66

thx