Question

Which of the following is not an ordered pair from the function f(x) = 5x - 6?
A
(3, 9)
B
(1, -1)
C
(5, 19)
D
(4, 10)

Answer 1

Answer:

D) (4,10)

Step-by-step explanation:

The concept of ordered pair is similar to that in co-ordinate geometry.

So, we are required to find out an ordered pair, which doesn't satisfy the function. Let's understand it in this way. If there's an ordered pair(x,y). If f(x)=5x-6, if you put x in this equation, then you would get y. If y=f(x), then the ordered pair (x,y) satisfies the function. So, you need to check for which option the function doesn't satisfy the ordered pair.

So, if you check the ordered pair (4,10).

f(x)=5(4)-6=14

and y=10

Since, y≠f(x), this function doesn't satisfy the ordered pair. Hence, option D is the answer.

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