Question

@misty1212 How can I find the equation of a line in standard form if the line passes from (0,3) to (-3,0)

I got x + y = -3 correct ?

Answer 1

lets see
did you find the slope?

Answer 2

ok good, so now we start with
\[y=x+3\] right ?

Answer 3

damn

Answer 4

when you see the point \((0,3)\) you should think right away "y intercept is 3"

Answer 5

ok fine
\[y-3=1(x-0)\] so
\[y-3=x\] right

Answer 6

how did that - 3 get to the other side of the equal sign? jump?

Answer 7

ok but how is \(0+3=-3\)??`

Answer 8

when you add 3, you add 3! it doesnt become minus

Answer 9

there are no parentheses, you are not distributing anything, you are just adding 3

Answer 10

\[7-3=4\\
7=4+3\]

Answer 11

\[y-3=x\\
y=x+3\]

Answer 12

btw there is no such thing as \(-0\)
as soon as you see zero, dont write it
\[y-3=1(x-0)\] is the same as \[y-3=x\]

Answer 13

now do you need to write it in standard form as well?

Answer 14

yes

Answer 15

yes, point slope is \(y-3=x\)
slope intercept is \(y=x+3\)

Answer 16

then if you want to write it in standard from you want all the variables on one side, the number on the other
you could subtract x and write
\[-x+y=3\] or if want to make the coefficient of the x term positive, write
\[x-y=-3\]

Answer 17

i thought u couldnt subtract x ?

Answer 18

you can add, subtract whatever
you just can't "bring it across" the equal sign

Answer 19

\[y=x+3\] subtract \(x\) from both sides you get \(y-x=3\)

Answer 20

then multiply both sides by \(-1\) and get \(x-y=-3\)

Answer 21

what do u mean by "bring it across? and i prefer -x + y = 3

Answer 22

nvm about "bring it across" if you prefer \(-x+y=3\) then leave it as that one !

Answer 23

lol okay ;) Thank you (again)

Answer 24

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