Find Slope m

area=4
4=(1/2)b*h -> so, there in not enough information given to find a slope

 

The point (2, 1) is given. Can it be that the base is 2 (value of x) and the height 1 (the value of y)? Can we do something with that?

 

nope, (2, 1) is just one point on that line, and 2 (value of x) and the height 1 would make an rectangle inside triangle, but we need one more point on that line

 

I probably did not post the entire question.