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Mathematics 21 Online
OpenStudy (pphalke):

help with this one plz i wont ask about these anymore

OpenStudy (pphalke):

OpenStudy (pphalke):

@Scooby6363 @latinC

OpenStudy (latinc):

start here (-5-(-2)) and (5-(-3))

OpenStudy (pphalke):

so i got -3 and -2 for both

OpenStudy (latinc):

no, -3 is correct for the first one, check the second

OpenStudy (pphalke):

8 for the second one

OpenStudy (latinc):

yes so your slope m value = -3/8

OpenStudy (latinc):

y = -3/8x +b solve for b

OpenStudy (pphalke):

how do i solve for b again?

OpenStudy (latinc):

in put a point for x and y

OpenStudy (latinc):

(-3,-2) into y = -3/8x + b

OpenStudy (pphalke):

idk how -3,-2 *y

OpenStudy (latinc):

-2 = -3/8(-3) +b

OpenStudy (pphalke):

i cant do that in my calc its difficult

OpenStudy (latinc):

throw your calculator away lol

OpenStudy (pphalke):

haha i can never do math without it lol :D

OpenStudy (pphalke):

@ganeshie8

OpenStudy (latinc):

one step at a time, (-3/8)(-3) = (-3*-3)/8 lets start here

OpenStudy (pphalke):

how do i do that part

OpenStudy (latinc):

balance, -2 -(9/8) = (9/8) -(9/8) + b

OpenStudy (pphalke):

difficult

OpenStudy (latinc):

-2 becomes -16/8

OpenStudy (latinc):

so -16/8 - (9/8) = b

OpenStudy (pphalke):

isnt it -25/8?

OpenStudy (latinc):

yes

OpenStudy (pphalke):

how do i put that in slope intercept form

OpenStudy (latinc):

y = mx +b, do you want to check your answer

OpenStudy (latinc):

y = -3/8x -25/8 is intercept form

OpenStudy (pphalke):

???

OpenStudy (latinc):

slope intercept form

OpenStudy (pphalke):

how do i do it in standard form Ax+By=C

OpenStudy (latinc):

y = (-3/8x -25/8)(8) first step

OpenStudy (pphalke):

how do i do that?

OpenStudy (latinc):

multiply the 8 into the equation, since those are fraction just multiple the 8 by the top numbers for now

OpenStudy (pphalke):

i cant do that without a calc and i dont know another way

OpenStudy (latinc):

k

OpenStudy (latinc):

k for now

OpenStudy (latinc):

you know what would make algebra really easy when it comes to points? having graphing paper

OpenStudy (latinc):

what did you get with your calc

OpenStudy (pphalke):

how do i multiply 8

OpenStudy (latinc):

-3*8 and -25*8

OpenStudy (latinc):

y = -24/8x-200/8

OpenStudy (latinc):

y = -3x-25 onced the fractions are reduced

OpenStudy (pphalke):

is that standard form ?

OpenStudy (latinc):

no

OpenStudy (latinc):

Ax+By = C

OpenStudy (latinc):

balance the equation to move the -3x, in other word add 3x to both sides

OpenStudy (pphalke):

?? is it -25-3 like -3x+3X

OpenStudy (latinc):

no , close though. 3x+y = -3x+3x -25

OpenStudy (pphalke):

3x+y=25??

OpenStudy (latinc):

O, we almost forgot the 8 so ---> 3x+8y = -3x+3x -25 solve this and you'll have standard form

OpenStudy (pphalke):

3x+8y=-25

OpenStudy (latinc):

yes

OpenStudy (latinc):

you can proof the equation by inputting 0 for x and solving for y and you should get b

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