Question

Hello I really need help with one homework question

Answer 1

what question is it?

Answer 2

Find an equation of the line containing the given pair of points
(-2,-4) and (-8,-9)

Answer 3

easy

Answer 4

Great because I have been at it for over an hour!

Answer 5

hahaha. ok first draw a cartesian plane

Answer 6

ok

Answer 7

you know what that is? yes? ok then plot the two points on the plane

Answer 8

Ok

Answer 9

have you done that? then draw a line between the two points on the graph

Answer 10

Done

Answer 11

ok so now you have to draw the line so that it crosses the x and y axis

Answer 12

just extend the line

Answer 13

ok done

Answer 14

good so now do you know what rise / run is?

Answer 15

No

Answer 16

ok so umm, what are the points when you extend the line to the x and y axis?

Answer 17

-2,2

Answer 18

good. ok so um,.. hold on let me do this in my head for a sec ok? so um,... while you wait tell me a bit about urself.

Answer 19

I am a student and university of phoenix. I am not good at math at all.

Answer 20

In my help page it says to find the slope first

Answer 21

yes you have to find the slope first

Answer 22

to find the slope you have to do rise over run

Answer 23

I come up with -5/6 is that right?

Answer 24

hold on i'm a bit slow

Answer 25

sorry about that i'm just learning it myself

Answer 26

it willl take a while. sorry

Answer 27

sorry to interrupt.... the slope is 5/6

Answer 28

ya i think so. sorry i'm not very good, i'm trying my best. ok um. have you heard of y2-y2/x2-x1= ?

Answer 29

yea that is the same formula I used but my answer came up with a negative 5/6

Answer 30

two negatives make a positive

Answer 31

Ok then onto the problem then how do I work this in

Answer 32

ok well you work out what 5/6 is and that's .833

Answer 33

ok

Answer 34

=0.833(x-8) =

Answer 35

ok

Answer 36

ok so the answer is y=0.833x-2.336

Answer 37

No they gave the answer as 5/6x-7/3

Answer 38

use the point-slope form.. y-y1 = m (x-x1)
take one given point and put in the x and y coordinates
y + 4 =5/6 (x+2)
isolate y:
y = 5/6 (x + 2) - 4
expand and collect like terms:
y = (5/6) x +5/3 - 4
y = (5/6) x - 7/3

Answer 39

Ok well I already got that one wrong so now I have a new one (-1,-8) and (-7,-6)

Answer 40

you still there?

Answer 41

slope = -2/6 = -1/3

Answer 42

The answer is as you posted above?

Answer 43

? you want the equation of the line right? hang on...

Answer 44

Ok Thanks!

Answer 45

y = (-1/3) x - 25/3

Answer 46

you are great thanks!!!!!!!!!

Answer 47

^o^ happy to help.

Answer 48

How about this one (-10,8);7x-5y=2

Answer 49

what are we looking for?

Answer 50

Write an equation of the line containing the given point and parallel to the given line. Express your answer as y-mx+b

Answer 51

y = (2/5) x + 22

Answer 52

Sorry I wrote that wrong it is (4,8);x-7y=5. I sent you my example question sorry.

Answer 53

Sorry it is x+7y not x-7y

Answer 54

y = (-1/7) x + 60/7

Answer 55

I really do not understand how you solve these ones but thanks. Can you help me with a couple more or is that not ok?

Answer 56

Ok, what does it mean for two lines to be parallel?

Answer 57

Is that OK?

Answer 58

Is what ok?

Answer 59

I would like to have help with another question

Answer 60

That's fine, but I was going to explain how to go about finding the answer to this one since you didn't actually learn anything from Applekiwi's response.

Answer 61

If you'd like to work on another problem, that's fine too.

Answer 62

I would like both help with solving the problem and explaining

Answer 63

Which problem?

Answer 64

(-2,7; 5x=4y+3

Answer 65

You want a parallel line that intersects (-2,7)?

Answer 66

Write an equation of the line containing the given point and parallel to the given line. Express your answer as y-mx+b

Answer 67

Sorry yes i forgot the other )

Answer 68

Ok, so what does it mean for two lines to be parallel?

Answer 69

They extend in the same direction

Answer 70

Equidistant at all points, and never converging or diverging

Answer 71

Are you still there?

Answer 72

Those are both good definitions. Let me give you a third. The reason that they are equidistant at all points is because they both have the same slope right?

Answer 73

Ok

Answer 74

Do you agree that makes sense?

Answer 75

Yes

Answer 76

So what is the slope of your original line?

Answer 77

5x=4y+3

Answer 78

5/4x-3/4?

Answer 79

that equals y, but what is the slope?

Answer 80

I don't know. How do I find the slope?

Answer 81

well, the slope intercept form of a line is

y=mx + b

where m is the slope, and b is the intercept. is that the form you have it in?