Determine if the given equations are functions or not functions. x=3
Functions
x2 + y2 = 81
Not Functions
y=-x+11
y? = -5x - 12
y = 2x2 - 6x + 4
y = -7

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.

-7/8

step-by-step explanation:

instead of subtracting you add the -6/8 and -1/8

include a picture of the drawing in order for me to

step-by-step explanation: