The equation of a line is given by:
y - y1 = m ( x - x1 )
You are given m = -3
And the point (-2 , 4)
Sub these values into the equation,
y - 4 = -3 ( x - (-2))
y - 4 = -3 ( x + 2 )
y - 4 = -3x - 6
y = -3x - 2
Hope this helped! Ask me if there's any part of the working you don't understand :)
