How do you find the slope from the equation of each line y= 1/5x

The slope is already solved for you!! :-)) For each line that has the basic 
y = 1/5 x, the slope is 1/5. What magic is this?!? Basically, given that the equations have no other values of x such as x square (parabola - which would have no definite slope) the slope will always be 1/5 because of this:
y = slope times x plus y-intercept :-) I hope this helps 

Best answer that i found on yahoo ok   set :   x= length of 2nd piece in cm  x- 3= length of 1st piece in cm  x-4= length of 3rd piece in cm  then since you know they all came from the 20 cm ribbon you add them together and set them equal to 20x+ x-3 +x-4 = 20  3x - 7= 20  3x= 27  x= 9  the shortest piece is the third piece which is x- 4  x-4  9-4 = 5  the length of the smallest piece is 5 cm.  the other lengths are  9 cm  6 cm