Question

Which is an equation of the line with slope -3/4 passing through the point (-,2,-10)?
A. y = -3/4x -23
B. y = -3/4x = 19/2
C. y = -3/4x - 10
D. 3x - 4y = 23
Please give me step by step, thank you!

Answer 1

ok, so, fastest way is to just plug your x value in and see which gives you the required y

Answer 2

can you try that please?

Answer 3

Slope intercept form would be y=mx+b (slope is m and b is y intercept)
slope: -3/4
y intercept: -10
Put it together!
y=-3/4x-10
so the answer would be C
Hope it helps!

Answer 4

@Breezy6 please read: http://openstudy.com/code-of-conduct thanks

Answer 5

Actually I didn't just GIVE the answer, I explained it as the rules state.
"Don't provide someone with just the answer - explain the process, and help guide them through understanding the problem."

Answer 6

I agree with Data. That is the same as giving an answer.

Answer 7

you should also encourage them to join solving their own problems because that's the only way they will learn.

Answer 8

So, the b is -10? Because it's the Y in the coordinates? :)

Answer 9

Yes, the y intercept is the b.
y=mx+b
m= slope
b= y intercept

Answer 10

uhm, no, so in order for the -10 to be b, it would have to be the y-intercept. Since you do not have that, you can either come up with an equation of your own and compare or plug and chug

Answer 11

Slope: 1/2
(8, -6)
Y = 1/2x + -6
Am I correct?

Answer 12

Y = 1/2x - 6**

Answer 13

what? that's not even related to this problem

Answer 14

look at the third post..?

Answer 15

I know, its the next one, Im using it to see If I understood what he told me

Answer 16

Breezy is a she btw
and what is your next problem?

Answer 17

No, so in order to use the y coordinate as b, your x coordinate must =0

Answer 18

Which is an equation of the line with slope 1/2 passing through the point (8,-6)?

Answer 19

so currently, you just have a point and a slope

Answer 20

So, why did she use -10 as the B in the first one? x was -2

Answer 21

the best way to get the eq. is to use Point-slope form, do you know it?

Answer 22

Y = mx + or - b?

Answer 23

because it is wrong, so ignore that

Answer 24

please, and I will show you the correct way

Answer 25

Is y = mx + or - b, Point-slope form?

Answer 26

You can use a given point and a slope to find a line

Answer 27

y=mx+b
you are given the slope (m)
to find the value of "b"
you should use the given point and substitute it in the equation y=mx+b and solve for b.

Answer 28

breezy please stop you are incorrect

Answer 29

Ok, data let me do this

Answer 30

@kmcllb you want to use point slope form for this problem

Answer 31

That's what I literally said twice.
"Yes, the y intercept is the b.
y=mx+b
m= slope
b= y intercept"

Answer 32

Is the answer y = 1/2x -2?

Answer 33

sounds more likely, but can I see your work please?

Answer 34

-6 = 1/2(8) +b
-6 = 4 + b
-4 -4
-10 = b
y = 1/2x - 10

Answer 35

very good. Yes, that is correct

Answer 36

Thank you, :)

Answer 37

now you can also use, \(y-y_0=m(x-x_0)\) when \((x_0,y_0)\) is any point on the line

Answer 38

I have another question

Answer 39

that is called point slope form, and it tends to be more useful. Sure just tag me

Answer 40

Which is an equation of the line in the figure (I have no figure) I can tell you the points
(0,4) (0,-3)

Answer 41

@fib

Answer 42

@FibonacciChick666

Answer 43

A. 3x + 4y = 0
B. 4x + 3y = o
C. 4x + 3y = 12
D. 3x +4y = 12

Answer 44

ok, so, first, you need to find the slope. If you have two points, do you know how to find slope?

Answer 45

Although, your question doesn't make sense, did you copy it correctly?

Answer 46

Yes,
y^2 - y^1
x^2 - x^1

Answer 47

Can I insert a picture taken from an iPhone on here to show you my Booklet?

Answer 48

That is slope form, I assume you mean a fraction there, but (0,4) (0,-3), are those the points? That's my issue, can you just check those?

Answer 49

slope formula*

Answer 50

There are no point's, you have to choose your own, by looking at the line (It's a negative slope if that helps)

Answer 51

ohhhh ok, so you cannot have two points with an x coordinate of zero and have a line.

Answer 52

so, do you know how to find the y value when x=0?

Answer 53

(0,4) (3,0)
Did I say it wrong?

Answer 54

yea, ok that sounds better

Answer 55

now, make sure those are of this form (x,y)

Answer 56

Then, calculate your slope

Answer 57

(0,4) (3,0) 0 - 4 = -4
3 - 0 = 3
4 = -4/3(0) + b
4 = 0 + b
-0 -0
4 = b
y = -4/3x + b?

Answer 58

NO!

Answer 59

ok, fix it

Answer 60

4x + 3y = 0

Answer 61

In standard form

Answer 62

no, better with last try. What is slope formula again?

Answer 63

It need's to be in standard form

Answer 64

you're getting ahead of yourself

Answer 65

Y = Mx + n
My answer was: y = -4/3 + 4
It's not an asnwer choice, so i need to make it standard form

Answer 66

y = mx + b

Answer 67

That is standard form, but your slope is wrong

Answer 68

hence, go back and tell me the slope formula again

Answer 69

0 - 4 -4
3 - 0 3

Answer 70

y2 - y1
x2 - x1

Answer 71

OH

Answer 72

4-0
3-0
4/3

Answer 73

No

Answer 74

(0, 4) (3, 0) y2 -y1
x2 - x1
0-4 -4
3-0 3
Am I wrong?

Answer 75

uhm well which is your answer?

Answer 76

Well, -4 Divided by 3 is -1.333 OR -4/3

Answer 77

that is correct, now, what is your y intercept?

Answer 78

4

Answer 79

good, so now, what is your slope intercept form?

Answer 80

(btw, slope intercept is usually called standard form, at least in my experience, not that blah they are making you do)

Answer 81

Y = -4/3 + 4
Standard form: Ax + By = c
4x + 3y = 4, which is not one of my answer choices

Answer 82

no, you haven't done it yet

Answer 83

so first, fx your slope intercept. It's missing something

Answer 84

Slope intercept?

Answer 85

My equation?

Answer 86

the formula you gave is wrong, it's missing stuff

Answer 87

y2 - y1
x2 -x1

Answer 88

y = mx + or - B

Answer 89

No, wait, I guess I wasn't clear. BTW, it's just y=mx+b there is no minus. b can be negative though

Answer 90

I know, thats why I say + or -
Ex. Y = 1x - 1
Ex. Y - 1x + 1

Answer 91

Y = -4/3 + 4<-----I'm missing something important
Standard form: Ax + By = c
4x + 3y = 4, which is not one of my answer choices

Answer 92

Y = -4/3x + 4

Answer 93

But it is actually incorrect to say plus or minus in the formula. It implies two answers

Answer 94

ok, now, how can you get the x to the other side?

Answer 95

By subtracting it

Answer 96

Nononon, Dividing by it

Answer 97

ok, subtracting what exactly?