Question 302224
{{{Gradient = (Y2 - Y1)/(X2-X1) }}} 

Point (3,0) => X1 = 3 and Y1 = 0 
Point (0,-2) => X2 = 0 and Y2 = -2

{{{Gradient = (-2 - 0)/(0-3) }}} 
{{{Gradient = (-2 )/(-3) }}} 
{{{Gradient = (2/3) }}}