Question 988382
f(x)=-3x/5+28/5
if y=8, 
8 =the above.
multiply everything by 5
40=-3x+28
-3x=12
x=-4

When x goes to the left 4, y goes up (0.6) since the slope is -3/5.  Four units of x=2.4 units of y, and that takes the graph from (0,5.6) to (-4,8).  The point that you know immediately is (0,28/5).  That is where you count from.


{{{graph(300,200,-10,10,-10,10,(-3x/5)+(28/5))}}}