Question

Determine the equation of the line, in standard form, that will get your spacecraft from the Launch Area to Point A.

Answer 1

Launch Area:___(1, 2)___
Point A:_____1,0_____
Point B:______4, 0____
Point C:_____-3,4_____

Answer 2

brb making lunch..

Answer 3

@ganeshie8

Answer 4

im back :)

Answer 5

im not seeing point A in graph ?

Answer 6

they gave me the graph and i'm suppose to come up with cordiantes

Answer 7

then answer questions about them

Answer 8

so, these point uve picked randomly is it ?

Point A:_____1,0_____
Point B:______4, 0____
Point C:_____-3,4_____

Answer 9

yes

Answer 10

okie cool :) so u making lunch or having lunch ?lol

Answer 11

eating it now lol

Answer 12

gotta love pizza day

Answer 13

wow ! its dinner time over here... ima have dinner shortly too :)

Answer 14

yeah its 1:08pm here

Answer 15

if it can wait, we can sit after ur lunch (after my dinner hehe)

Answer 16

probably, how long ya got for dinner?

Answer 17

this quesiton wont take much time actually,

Answer 18

il go in 20-30 minutes

Answer 19

well theres like 8 questions for this lol :l

Answer 20

first 3 are distances between points though

Answer 21

let me give u a headstart then...

Answer 22

These are the first 3,

1. Determine the equation of the line, in standard form, that will get your spacecraft from the Launch Area to Point A.


2. Determine the equation of the line, in point-slope form, that will get your spacecraft from Point A to Point B.


3. Determine the equation of the line, in slope-intercept form, that will get your spacecraft from Point B to Point C.

Answer 23

lets find equation for line between Launch area and Point A

Answer 24

alright lets do it :D

Answer 25

Nice :) I'll show u how to do for above, u can try if u can do the rest

Answer 26

I'll give it a go! there all in different forms though lol :S

Answer 27

Launch Area:___(1, 2)___
Point A:_____1,0_____

Answer 28

yep

Answer 29

gotta find the equation to get our spaceship there lol

Answer 30

watever the form it is, first we will find slope between two points of

Answer 31

undefined slope

Answer 32

u knw how to find slope between two points

Answer 33

thats right, slope between Launch Area and Point A is UNDEFINED
so, the line wud be vertical

Answer 34

umm would that be the

(y2 - y1) / (x2 - x1) equation?

Answer 35

exactly ! we will use for rest of the two questions.

Answer 36

lol luckily all the slopes are vertical or horizontal xD

Answer 37

cool, less work :)
tell me wats how the equation of vertical line looks like ?

Answer 38

I believe it would be x = 1?

Answer 39

Perfect ! u dont need me anymore :|

Answer 40

lol i still need ya for plenty

Answer 41

ok sure :) Is the equation u got in standard form ?

Answer 42

That I'm not sure of :S

Answer 43

I think so but don't know so lol

Answer 44

can u google and get the 'standard form of line' equation plzzzz :)

Answer 45

alright one second

Answer 46

The Standard Form equation of a line has the following formula: Ax + By = C where A ≠0 and B ≠0

Answer 47

so how would i take x = 1 and put it in standard form?

Answer 48

x = 1

1x + 0y = 1

Answer 49

that should do, we cant do anything about A ≠0 and B ≠0 . so dont worry about it. move on to net q

Answer 50

*next

Answer 51

alright thanks man! thats 1 down lol

Answer 52

2. Determine the equation of the line, in point-slope form, that will get your spacecraft from Point A to Point B.

Answer 53

Point A:_____1,0_____
Point B:______4, 0____

Answer 54

wats slope ?

Answer 55

0

Answer 56

yup,

remember these for the rest of course :-
1) vertical line : slope = undefined ; x = k
2) horizontal line : slope = 0 ; y = k

Answer 57

whats k?

Answer 58

wats theequaiton of line ?

Answer 59

k is just some number,
can u put the equation for line first, then we will see wat k is

Answer 60

y = 0?

Answer 61

yup ! thats the horizontal line.
k is 0 here

Answer 62

but they want it in point slope form

Answer 63

hmm..

Answer 64

to google lol!

Answer 65

yup, google ang gimme point-slope form, then we will see :)

Answer 66

y - y1 = m(x - x1)?

Answer 67

exactly ! you're good at googling !!

Answer 68

plenty of experience lol

Answer 69

lol,

now we knw slope = m = 0
pick one of hte point, then we can plug the values in above equation

Answer 70

Point A:_____1,0_____
Point B:______4, 0____

how about 1,0?

Answer 71

lets pick Point A
Point A:_____1, 0_____
x1 y1

Answer 72

slope = m = 0

Answer 73

plug these in ur point-slope form (DONT SIMPLIFY)

Answer 74

y - y1 = m(x - x1)?
y - 0 = 0(x - 1)?

Answer 75

looks perfect ! u must have that form. ok . should not simplify

Answer 76

Next..

Answer 77

now we add the second cordinate?

Answer 78

or is that the final answer?

Answer 79

We are done.
picking any one point will do.

Answer 80

sweet.. lol next..

Answer 81

3. Determine the equation of the line, in slope-intercept form, that will get your spacecraft from Point B to Point C.

Answer 82

slope intercept form is y = mx + b if i remember right where m is the slope and b is the y intercept

Answer 83

thats correct ! :)

Answer 84

y = mx + b...
well its slope is undefined and it doesnt have a y intercept lol

Answer 85

wait a minute..

Answer 86

Point B:______4, 0____
Point C:_____-3,4_____

Answer 87

it does have a y intercept and slope...

Answer 88

find the slope first,
finally u getting to use the slope formula :)

Answer 89

using (y2 - y1) / (x2 - x1) to find the slope...
4 - 0 -3 - 4
4/ -7
= .57?

Answer 90

leave it as -4/7

Answer 91

ok

Answer 92

shouldnt it be 4/-7 not -4/7?

Answer 93

so the equation must be :-

\(\large y = \frac{-4}{7}x + b\)

Answer 94

both are same friend

Answer 95

alright gotcha

Answer 96

4/-7 = -4/7