Which graphs represent functions?

a. graph dont
b. graph a only
c. graph cand graono
d graph band graph d

Option A. Graph D only

Step-by-step explanation:

A function is an output of the mapping of the values of x into the output y.

In other words, the function is given by the expression:

y = f(x)

Let's look at the graphs in turn:

The graph A gives straight line equations, however, we cannot interpret these in terms of a definite function.

The graph B is a series of dots. It is not a function.

The  C is a series of dots. It is not a function.

The graph D only is a function. It is a reflection about the x- axis.

11.2

step-by-step explanation:

when doing tangent the tangent of the angle is equal to the opposite side from the angle over the adjacent side to the angle.

tan43 = x / 12

move 12 over by multiplying each side by 12

12tan43 = x

x = about 11.2