Y - x = 154
let z = xy = x(154 + x) = x^2 + 154x
we need to find the minimum value of z
z' =   2x + 154  which = zero for minm or maxm value
x = -77   and y = 154 -77 = 77
so the 2 numbers are -77 and 77
        
             
        
        
        
75kg should be the answer
        
             
        
        
        
Answer: Y intercept: 5 The slope of the line is: 2 
Step-by-step explanation:
Y=mx+b is y-intercept form
So you have to solve this equation for y.
This looks like:
-2x+y=5
+2x      +2x
y=2x+5
 
        
             
        
        
        
Y+1=[m(the slope)](x+2),  y=mx+2m-1, it is impossible to get the answer without the graph.