Answer:
y=-2x-5
Explanation:
For m=-2
For (0,-5) a=0 AND b=-5
(use the equation y-b=m(x-a) to find the equation of the line)
y-b=m(x-a)
(sub the values of m (the slope) and a&b (from the point passing through the line)
y - (-5) = (-2) × ( x - 0 )
(simplify)
y+5=-2(x-0)
(expand the bracket)
y+5 = -2x+0
(subtract 5 for both sides)
y=-2x+0-5
(simplify)
y=-2x-5