Y= -2+21
This is because the slope needs to be the negative reciprocal of 1/2 so the slope is -2 then you take the point (5,11) and plug that an the -2 into y=m(x)+b and you solve for b. In the end you get 21
It means that value is not counted. it’s there but you don’t include it
Ratio is white socks / brown socks
There are 8 white and 7 brown
Ratio = 8/7
y-intercept for x = 0.
Substitute x = 0 to the equation of the function:

1992.1875
1500/64000= 0.0234375
0.0234375 x 85000=1992.1875