Malia is using an online calculator to calculate the outputs f(n) for different inputs n. The ordered pairs below show Malia's inputs and the corresponding outputs displayed by the calculator:

(1, 4), (2, 9), (3, 14), (4, 19)

Which of the following functions best represents the rule that the calculator uses to display the outputs?

f(n) = 5n − 1
f(n) = 5n + 1
f(n) = 4n + 1
f(n) = 4n − 1

Question

Malia is using an online calculator to calculate the outputs f(n) for different inputs n. The ordered pairs below show Malia's inputs and the corresponding outputs displayed by the calculator:

(1, 4), (2, 9), (3, 14), (4, 19)

Which of the following functions best represents the rule that the calculator uses to display the outputs?

 f(n) = 5n − 1
 f(n) = 5n + 1
 f(n) = 4n + 1
 f(n) = 4n − 1

erak · Answer

So you can just a check yourself by plugging in "n" into the equations using the first number in the given outputs. (n,y)

mrnood · Answer

the terminology is the same as saying (taking the last example)
y=4x-1

looking at the first pair of results : (1,4) this is equivalent to y = 4 when x = 1

so put those values into the equation:
4 = 4(1)-1 = 4-1 =3

You can see that his equation is NOT true - therefore the option d is not the correct answer.

Do th esame for the other thre equations and find the one that is true for all the pairs of numbers