Question

What is the slope of the line passing through the points (2,7) and (-1, 3) ?

Answer 1

y2 - y1
------ = slope
x2 - x1

Answer 2

So 7-3 and 2-(-1) ?

Answer 3

keep going Luckylexi

Answer 4

I got 4/-1 ? But that's not one of the answer choices.

Answer 5

2 - (-1)

is the same as

2 + 1

Answer 6

So 4/3 ?

Answer 7

good

Answer 8

Can you help me with another question ?

Answer 9

sure

Answer 10

Okaye i'll attach the file. It shows the question.

Answer 11

ok first off, you need to find the slope of that line

Answer 12

4/6 ?

Answer 13

hmm it's a small

Answer 14

the slope is not 4/6

Answer 15

Well i'm very very confused then !

Answer 16

remember, the slope formula is

m = (y2 - y1)/(x2 - x1)

Answer 17

Oh. Soo -4/0 ?

Answer 18

no

Answer 19

you would only have 0 in the denominator if you had a vertical line

Answer 20

remember, y goes on top

Answer 21

4/-6 ?

Answer 22

again, the y differences go on top of the fraction

Answer 23

-6/4 ?

Answer 24

closer, but no

Answer 25

notice how the line has a positive slope (it goes up as you read it from left to right)

Answer 26

okaye if you have (0,1) Which one is y and which one is x ?

Answer 27

if you have the point (0,1), then x = 0 and y = 1

Answer 28

all points are of the form (x,y)

Answer 29

So -6/-4 ?

Answer 30

now reduce that

Answer 31

-3/-2 ?

Answer 32

two negatives divide to make a _____

Answer 33

positive ? so 3/2 ?

Answer 34

perfect, the slope is 3/2

Answer 35

So 3/2x+3 ?

Answer 36

good

Answer 37

How about : The x intercept of a line is -5 and the y- intercept of a line is -2 . WHat is the equation of the line ?

Answer 38

My answer is 5/2x-2 . Is that right ?

Answer 39

that is incorrect

Answer 40

Dang . What about - 5/2x-5 ?

Answer 41

sounds like you're guessing

Answer 42

what I recommend is you using the slope formula again

Answer 43

the two points you will use are

(-5,0) and (0,-2)

Answer 44

How do i Do that if I only have two numbers ?

Answer 45

the two intercepts mean that you have these two points on the line

(-5,0) and (0,-2)

Answer 46

-2/-5 ?

Answer 47

you messed up somewhere, the overall slope should be negative

Answer 48

so if they're both negative signs that means the slope will be positive ?

Answer 49

yes, -2/-5 = 2/5

but the slope should be negative

Answer 50

Well then iDk hat it could be ?

Answer 51

it should be -2/5

so you either lost a negative sign or you introduced one in there somewhere

Answer 52

so again, the slope is -2/5

Answer 53

Okaye. I see now . I have one last one ! And i'll attach the file. Thank you soooo much !!!

Answer 54

first off what is slope intercept form?

Answer 55

-5/2 ?

Answer 56

no in general, what is slope intercept form

Answer 57

Oh y=mx+b

Answer 58

good, so you have to turn the original equation given into that form

Answer 59

So y= -5/2(x+11) ?

Answer 60

that's not in the form y = mx + b

Answer 61

and you simplified incorrectly

Answer 62

Well how do I do that ?

Answer 63

y - 7 = -5/2(x + 4)

y - 7 = -5/2(x) - 5/2(4)

y - 7 = -5/2(x) - 5/2*(4/1)

y - 7 = -5/2(x) - 20/2

y - 7 = -5/2(x) - 10


I'll let you finish up

Answer 64

y-7+7 = -5/2(x) -10+7 ?

Answer 65

keep going

Answer 66

y= -5/2(x) - 3

Answer 67

nailed it

Answer 68

Thank You soooo much !

Answer 69

you're welcome