Question

Attachment below: geometry

Answer 1

@jim_thompson5910

Answer 2

first we need to find the length of AC

Answer 3

so use the distance formula for this

Answer 4

what numbers do we input though?

Answer 5

the coordinates of A and C

Answer 6

is it 7 or 6 for A?

Answer 7

C is 4 or 4.something?

Answer 8

what is the ordered pair for point A

Answer 9

6, 4?

Answer 10

you sure?

Answer 11

again I'm asking for point A

Answer 12

No, I'm not.. I'm not sure what point A is at.

Answer 13

you start at the origin (0,0)

this is where the x and y axis cross

Answer 14

now how many spaces must you go to the left to get to point A?

how many spaces do you go up or down?

Answer 15

Yes.. I understand how to find it but I'm not sure if it's 6 or 7.

Answer 16

-7

Answer 17

it's 6 units to the left

so A is the point (-6, 0)

Answer 18

yeah.. I forgot the negative sign. so -6,

Answer 19

the y coordinate is 0 since you don't go up or down and you stay on the x axis

Answer 20

what is point C

Answer 21

don't we have to find AB, BC, and AC?

Answer 22

no all we need right now is AC

Answer 23

why are we doing one point at a time? for the form.?

Answer 24

ohhh

Answer 25

we need AC because we're trying to prove that some new line segment is parallel to AC and it's half the length

so we need the length of AC first

Answer 26

to find the length of AC, we use the distance formula

but to do that, we need the points A and C (the x,y form of both points)

Answer 27

okay.. but how do I figure out C? considering it's not an even number

Answer 28

C is the point (0,-4)

you start at (0,0) then go down 4 ticks or units to land on C

Answer 29

I honestly don't know what the -6.67 is referring to

Answer 30

so it's -6,-4?

Answer 31

no (0,-4)

notice how you don't go left/right from the origin to get to C

Answer 32

no, I mean for AC....

Answer 33

oh AC is the distance from A to C

Answer 34

when I say AC, I really mean "find the length of segment AC"

Answer 35

Now, I'm lost. I just meant the coordinates...

Answer 36

we know that A is the point (-6,0)

C is the point (0,-4)

the distance from A to C is ????

Answer 37

Should I use a formula or just subtract?

Answer 38

I'd use the formula so you get more practice using it

Answer 39

one sec

Answer 40

ok

Answer 41

d = sqrt(-6, 0)^2 + (0 - (-4))^2??

Answer 42

i think you meant to say -6 - 0 instead of -6, 0

Answer 43

if so, then you are correct so far

Answer 44

d = sqrt(x2-x1)^2+(y2-y1)^2
d = sqrt(-6 - 0)^2 + (0 - (-4))^2
d = sqrt(-6)^2 + (4)^2
d = sqrt(36) + (16)
d = sqrt(52)
d = 7.2

Answer 45

good

Answer 46

now you must find the midpoints of AB and BC

Answer 47

Do I do AB now?

Answer 48

yes you need the midpoint of AB

you do NOT need to find the distance from A to B

Answer 49

how do I do this?

Answer 50

use the midpoint formula

http://www.purplemath.com/modules/midpoint.htm

the link above explains what the formula is and how it works

Answer 51

Yeah but what numbers do I put in? I actually remember this formula

Answer 52

the coordinates of A and B

Answer 53

0,4 ?

Answer 54

that's point B

Answer 55

A(-6,0)
B(0,4)

Answer 56

now use the midpoint formula

Answer 57

-6 + 0/2, 0 + 4/2?

Answer 58

keep going

Answer 59

-3, 2

Answer 60

good, that's the midpoint of AB

let's call this point M

Answer 61

what is the midpoint of BC?

Answer 62

is it 0,4 and 0,4?

Answer 63

not the midpoint

Answer 64

B(0,4)
C(0,-4)

midpoint is ????

Answer 65

2, -2?

Answer 66

no

Answer 67

I must be doing something wrong

Answer 68

the x coordinates of the two points are 0 and 0

add them, divide by 2

(0+0)/2

0/2

0

so the x coordinate of the midpoint is 0

Answer 69

what is the y coordinate of the midpoint ?

Answer 70

I see what I did wrong. It's 0, -2

Answer 71

no it's not

Answer 72

the y coordinates are 4 and -4

they add to 0

cut this in half to get 0

Answer 73

so the midpoint is (0,0)

Answer 74

so let the point N be the midpoint of BC

this means N is the point (0,0)

Answer 75

you have two new points: M(-3,2) and N(0,0)

you need to do two things now

a) find the slope of MN

b) find the length of MN

Answer 76

one sec

Answer 77

ok

Answer 78

My computer froze and I lost all my answers on the test. I'll come back to this question after.

Answer 79

Hey, could we work from a certain step?

Answer 80

I'm sorry, I cannot help you on tests since it's something you should do on your own.

Answer 81

It's not a test... I was talking about something else. Not what I was consulting with you with.

Answer 82

This is for practice.

Answer 83

alright

Answer 84

How do we find the slope? and the test I was doing was for English

Answer 85

what are the two points?

Answer 86

M(-3,2) and N(0,0)?

Answer 87

use the slope formula to get this


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


m = (0-2)/(0-(-3))


m = (0-2)/(0+3)


m = -2/3

Answer 88

so that's for one side or both?

Answer 89

I'm not sure what you mean

Answer 90

is this for the same problem? or a different problem?

Answer 91

Same. There was two points so I was wondering.

Answer 92

oh that's right you needed to find the slope of MN

Answer 93

Now I'm confused hahaha

Answer 94

and yes you need two points to find the slope

one is not enough

Answer 95

can we start from when we found N?

Answer 96

yeah it doesn't help that this happened nearly 5 hours ago