Question

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

Answer 1

Answer:

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:

$y = -2x-3$