Find the slope of the line passing through the points (3,16) (8,18) A) 2/5
B)-5/2
C)5/2
D)-2/5

2/5

Step-by-step explanation:

Slope of line is also called the gradient of line.

The formula of gradient of a straight line is always (y1-y2)/(x1-x2)

the answer is b.)

< 1=< 2

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.