A proportional relationship between the number of pounds of cabbage (x) and the price in dollars (y) is graphed, and the ordered pair (5, 2) is on the graphed line. Part A: what is the price of 1 pound of cabbage? Show your work, including The proportion you use to determine the price. Part B: What does the ordered pair (10, 4) on the graph represent? Explain in words.

Question

danjs · Answer

Proportional relationship

y = k*x   , where k is a constant

danjs · Answer

(x,y)=(5,2)

k = y/x  = 2/5  so,

y=(2/5)*x

danjs · Answer

what is y when x is 1 pound of cabbage? 

y=(2/5)*1 = 2/5

danjs · Answer

(10,4) , 4 lbs of cabbage costs 10 dollars