For this case we have that the point-slope equation of a line is given by:
[tex]y-y_ {0} = m (x-x_ {0})[/tex]
They tell us that:
The slope, [tex]m = -2[/tex]
The point, [tex](x_ {0}, y_ {0}) = (0, -3)[/tex]
Substituting in the equation:
[tex]y - (- 3) = - 2 (x-0)\\y + 3 = -2x[/tex]
Finally:
[tex]y=-2x-3[/tex]
Answer:
[tex]y = -2x-3[/tex]
