Answer: Our equation will take the form of a linear equation, this is: Y = A*X +B passes through the point (6,-3)
this means that -3 = A*6 + B, and also the slope is 1/2, so A =1/2.
So we only need to know the value of B.
then if :
-3 = 1/2*6 - B = 3 + B
B = - 3 - 3 = -6
So our equation is: Y = 1/2*X - 6