Question

Find the equation of the line that contains the given points. Let y be the dependent variable and let x be the independent variable.
P1(3, -9), P2(5, -9)

this is what i did and its coming out wrong...

y-(-9)=x-3
y+9=x-3
y=x-(3-9)
y=x+6


what am I dont wrong?

Answer 1

you forgot the slope.

Answer 2

and the formula is,
\[y - y_1 = m(x-x_1)\]

Answer 3

I have the formula down I just added in the numbers

Answer 4

DId you found the slope?

Answer 5

m=0

Answer 6

Then it will be something like,
y = -9

Answer 7

Try graphing it.

Answer 8

then you shouldnt have an x if your m is zero right? coz it's y-y1 = m(x-x1)...if your m is zero...your whole x becomes zero too since you multiply it by zero

Answer 9

yeah I just saw that

Answer 10

it works y=-9

Answer 11

slope is rise over run so slope is how much y changes over how much x changes

Answer 12

thank you