Question

http://gyazo.com/763131854a1d073aade9794a239d35b2
Will become a Fan and give out medals and stuff.

Answer 1

If someone could help me with these parts they will get 304 Internet Points.

Answer 2

@jim_thompson5910 @iambatman @freckles @StudyGurl14 @Zarkon

Answer 3

find the slope of the lines if they are same then parallel
if m1= -(1/m2) then they are perpendicular

Answer 4

What are 304 internet points?

Answer 5

First step, find the slope of the line of both sets of coordinates.

Answer 6

Do you know how to find slope?

Answer 7

..using two points on a line?

Answer 8

I first need to find if the parallel lines are reciprocal, opposite, the same or negative

Answer 9

Oh, for that...parallel lines have equal slopes

Answer 10

they can never intersect (definition of parallel), and so the slopes have to be exactly the same

Answer 11

So 'The same'. Ok thanks

Answer 12

m1= -(1/m2) perpendicular lines. that is negative reciprocal

Answer 13

hmmm /:

Answer 14

The slopes of perpendicular lines are reciprocals, opposites, the same, or negative reciprocals ?

Answer 15

first thing to do is identify the slopes of the two lines for you to compare
\[m = \frac{ y_2-y_1 }{ x_2-x_1 }\]

Answer 16

m1= -(1/m2) perpendicular lines. that is negative reciprocal

Answer 17

Oh, perpinduclar would be negative

Answer 18

ok

Answer 19

Now for part 3:Find the slopes of lines AB and CD. Show your work.
Would this just be y2 - y1 / x2 - x1?

Answer 20

yups.

Answer 21

Wait i dont understand, it shows 4 different coordinates for AB and CD.

Answer 22

use point A and B for line AB
and point C and D for line CD

Answer 23

I don't understand.

Answer 24

A (3,4) B(7, 7)
slope for AB = 7-4/7-3 = 3/4

C(0,0) D (-6,8)
slope for CD = 8-0/-6-0 = -8/6 =- 4/3

Answer 25

Awesome, any idea for part 4?

Answer 26

Using what you discovered in Parts I and II, determine if the lines are parallel, perpendicular, or neither. Explain your answer.

Answer 27

Using the information known about perpendicular and parallel lines, how would you classify these two lines?

Answer 28

negative?

Answer 29

remember, parallel lines have equal slopes.
Does 3/4 = -4/3 ?
nope

and perpendicular lines have opposite reciprocal slopes

Answer 30

Are 3/4 and -4/3 opposite reciprocals of each other?
\[\frac{3}{4}\times -\frac{4}{3} = -\frac{3\times 4}{4 \times 3} = -1\]
YEP!

Answer 31

So yes it is negative?

Answer 32

@StudyGurl14 ?

Answer 33

no...the lines are perpendicular

Answer 34

..since their slopes are opposite reciprocals of each other

Answer 35

As m1= -(1/m2) lines are perpendicular

Answer 36

So which one is it?

Answer 37

the lines are perpendicular

Answer 38

Parallel or perpendicular ?

Answer 39

I've said it like three times....lol

Answer 40

ok, and why are they perpendicular ?

Answer 41

omg...i already said

Answer 42

look at previous posts^

Answer 43

haha sorry, I'll give you an extra 200 internet points (:

Answer 44

what are internet points?

Answer 45

since their slopes are opposite reciprocals of each other ?

Answer 46

correct^

Answer 47

And then how would i graph this stuff?

Answer 48

Oh nevermind i got it.

Answer 49

okay...lol you sure?

Answer 50

Yea I just plug in points A, B, C and D right?

Answer 51

sorta. you plug in and solve for the y-intercept...but anyway:
https://www.desmos.com/calculator/0yap1nljbs

Answer 52

Perfect, i just got a few more questions! Is it ok if i tag you in them @StudyGurl14 ?

Answer 53

yeah

Answer 54

(: