Question

For the function f(x) = x + 7, what is the ordered pair for the point on the graph when x = 2b. A. ( 2b, 2b+7). B. ( 2b, x + 7). C.( x, x + 7 ). D. (x, 2b + 7)

Answer 1

A. (2b, 2b+7)

Explanation:

An ordered pair of a function is represented as follows (x, f (x)) where f (x) corresponds to the value that x takes when replacing it in the function

`x= 2b\\f(x)= x+7`

we substitute the value of x
`x=2b`) in the function

`f(2b)= 2b+7`

the ordered pair for x = 2b is

`(x,f(x))\\x= 2b\\f(x)= 2b+7\\(2b,2b+7)`

Answer 2

The first element in the ordered pair is the value of x. From the given, the abscissa is 2b. Furthermore, we find the second element by substituting this value to the function. Hence, the ordinate is 2b + 7. The answer for the question above is letter A. (2b, 2b + 7).