Question

What is the equation of a line that goes through the point (0,-3) and has a slope of -2 ?

Answer 1

y=-2x-3

Step-by-step explanation: cuz y=mx+b ur slop is -2 and ur y is -3

Answer 2

For this case we have that the point-slope equation of a line is given by:

`y-y_ {0} = m (x-x_ {0})`

They tell us that:

The slope,
`m = -2`

The point,
`(x_ {0}, y_ {0}) = (0, -3)`

Substituting in the equation:

`y - (- 3) = - 2 (x-0)\\y + 3 = -2x`

Finally:

`y=-2x-3`

Answer:

`y = -2x-3`