Question

find an equation of the line having the slope and containg the given point m=3/4,(3,-2)

Answer 1

hes apparently in a exam @lgbasallote

Answer 2

hmm

Answer 3

we can write (y-(-2))=(3/4)(x-3)
y=3x/4-1/4

Answer 4

let's give him the benefit of the doubt...just tell him HOW to solve it..

Answer 5

thanks drewnj

Answer 6

find an equation of the line containing the points
(4,1) and (12,8)

Answer 7

How about you use the method shown above^^ by @AndrewNJ ?

Answer 8

ok

Answer 9

Just find your slope and then use the method shown.

Answer 10

first u have to find out the slpoe k
k=(y1-y2)/(x1-x2)=(8-1)/(12-4)=7/8
then substitution the slope k and one point [(4,1) or (12,8) ]in to a basic quadratic equation
y=kx+b
if i use (4,1) then
1=(7/8)*4+b
we can work out b=-5/2
so y=(7/8)x-5/2

Answer 11

u are right!
the work you done can have the slope can substitution it and a point into y=kx+b to have the b

Answer 12

the second 'can' should be 'and' -.-

Answer 13

so -7=(5/7)*0+b right

Answer 14

you reverse x and y
it should be 0=(5/7)*(-7)+b
remember y=kx+b

Answer 15

:)

Answer 16

so it should read y=(5/7)x-1

Answer 17

0=(5/7)*(-7)+b
0=-5+b
b=5

Answer 18

so it should read y=(5/7)x+5 right

Answer 19

yes!

Answer 20

ok i am getting it

Answer 21

what's your mean for it ?

Answer 22

write an equation of the line containing the given point and perpendicular to the given line

Answer 23

rewrite 2x+9y=4 to y=(-2/9)x+4/9
and (-2/9) is the slope

Answer 24

no it just work out the slope
u still need to sub the slope and the point (0,7) into y=kx+b to find b

Answer 25

couldnt you also write it as 2(0)+9(7)=4

Answer 26

oh im sorry
the upper one is perpendicular, i thought it was Parallel
i redo it again

Answer 27

rewrite 2x+9y=4 to y=(-2/9)x+4/9
and the slope of that line is -2/9
so the slope perpendicular to that line is k=1/(-2/9)=-9/2
and then substitute k=-9/2 and point (0,7) into y=kx+b to find b

Answer 28

so the equation should read 0=-9/2*7+b

Answer 29

this time the point is (0,7) x=0, y=7. so 7=(-9/2)*0+b

Answer 30

oh yea thats right

Answer 31

lol

Answer 32

so next line should read 7=0+b
then y=-7+b

Answer 33

so we work out b=7
and FINALLY substitute k=-9/2 and b=7 into y=kx+b
the final equation is y=(-9/2)x+7

Answer 34

ok whatever you say

Answer 35

you a smart dude

Answer 36

:)

Answer 37

what grade you in