Question

WRITE IN STANDARD FORM the equation of the line goin thru points (7,5) & (-4,9) use (y2-y1),(x2-x1) formula

Answer 1

can u find the slope ?

Answer 2

yes its - 4/11

Answer 3

y-y1 = m (x-x1 )
u have m now and a point too.. plug in this formula u will get ur answer and standard form look like this
y= mx + c

Answer 4

i already did do that bro watch

y-5= -4/11(x-7)
y-5=-4/11x + 28/11
(4)y-5=-4/11+28/11(4)
4y-20=-1x+7
add 1x to both sides
1x+4y-20=7
add 20 to both sides
1x+4y=27

am i right?

Answer 5

what u did in 3rd step/?

Answer 6

and beside its wrong..

Answer 7

the equation u ahve found does not have a slope u have found above.

Answer 8

to make it into standard form u have to multipy both sides of the equation by the LCD and if its wrong help me solve it then?

Answer 9

y-5= -4/11(x-7) ok this is the equation .. now we have to multiply and reaarange it..
first.. can we multiply both sides with 11 so we can get rid of denominator .. agreed?

Answer 10

if i knew i wouldnt really be askin the question -.- but yes i guess so...keep goin?

Answer 11

we are just multiplying.. thats all
so after multiplying 11 we will get
11(y-5) = -4 (x-7)
11y-55 = -4x +28... can u do it from here?

Answer 12

thats exactly what i got when i worked it the second time!!! awesome
but yes hold up

i ended up with 4x+11y=27

Answer 13

hmm no.. there shouldnt be 27
4x+11y = 28+55

Answer 14

thats not in STANDARD FORM tho

Answer 15

so its 4x+11y=83 ?

Answer 16

yes i know .. standard form is something like this y = mx +c
so we have to reaarange it again
4x+11y=83
11y = -4x +83
y =-4/11x +83/11
this is ur standard form.

Answer 17

nah standard form is Ax+By= C (no fractions coefficeint of X is positive A > 0
-

Answer 18

lol oppss ya that was slope interception form....
4x+11y=83 so this would be it

Answer 19

told u :D

Answer 20

lol. ya my bad..

Answer 21

what about same problem but with these points (6,5) (-1,9)