The mapping diagram shows a function q(x).
> 1
> 2
> 3
> 4
which mapping diagram shows the inverse of q(x)?

B.   1>2

                     2>4

                     3>6

                     4>8

Step-by-step explanation: We are given mapping diagram of function Q(x).

2>1

4>2

6>3

8>4

We need to find the mapping diagram of inverse of Q(x).

Note: The inverse function switches the x and y mapping to y and x mapping.

(x,y) would become (y,x) or (a,b) would become (b,a).

So, each mapping would just flip and we get

                     1>2

                     2>4

                     3>6

                     4>8

Which is the mapping in option B.

the sum of the lengths of any two sides of a triangle is greater than the length of the third side. if you take the three sides of a triangle and add them in pairs, the sum is greater than (not equal to) the third side. if that is not true, then it is not possible to construct a triangle with the given side lengths.

step-by-step explanation:

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.