Helllppp!
y = -1/2x^2 + 2
y = -2x^2 + 3
y = -3/4x^2
y = -4/5x^2 - 5
for the quadratic equations shown here, which statement is true?
a) the graphs open upward.
b) the graphs open downward.
c) the graphs are symmetric about the x-axis.
d) the graphs are listed from narrowest to widest.

fsfd

step-by-step explanation:

fdddff

answer: the price of one pound cabbage = $ 0.8

the point (10,8) represents that the cost of 10 pounds cabbage is $ 8

step-by-step explanation:

since, here is a proportional relation between the number of pounds of cabbage (x) and the price in dollars (y).

therefore, we can write,

⇒ y = k x

where k is the constant of proportionality.

now, point (5,4) is in the line.

thus, it will satisfies the above equation of line.

⇒ 4 = 5 k

⇒ k = 0.8

thus, the equation of the line is,

y = 0.8 x

a) for x = 1,

y = 0.8

therefore, the cost of one pound of cabbage is 0.8 dollars.

b) in the below graph (10,8) represents that the cost of 10 pounds of cabbage is 8 dollars.