Plot A versus B for A=5(B-20)/8 for B values from -20 to +80 line & system solution

Question

Algebra b graphs:line & system solution (a)

 

Y=x-3 With Y=-x+5

Answer 1

 

   A = 5/8 B - 5/2           This is just graph of a line with slope 5/8, and B = -5/2., as Horizontal (B) intercept.

 

        Mark points 

     

            ( -20, -15)     ( 80, 95/2) on the graph. and have the plot between those 2 points.