Question

Write the standard form of the line that passes through (-1,-3) and (2,1)

Answer 1

Answer:


`5 = - 2x - y`
To find this you must find the slope first:

`(y - y1)/(x - x1)`
which is, after performing some calculating is -2.

Next you need to set up your eqaution:

`y - y1 = m(x - x1)`
when you set it up, and substitute the variables for your slope and points you should get this:

`y - ( - 3) = - 2(x - 1)`

`y + 3 = - 2x - 2`
add 2 to both sides

`y + 5 = - 2x`
subtract y from both sides

`5 = - 2x - y`