Question

Let f be a function consisting of exactly 50 ordered pairs. How many elements belong to the range of f? a. exactly 50 b. less than 50 C. greater than 50 d. at least 50 at most 50

Answer 1

a) Exactly 50

Explanation:

The range of a function consists in the resulting y-values that we get once we substitute all the possible x-values of a function.

The function of this problem consists of exactly 50 ordered pairs, this means the function has EXACTLY 50 pairs (x,y) where x is the x-value and y is the resulting y-value for that x.

Therefore, we have EXACTLY 50 y-values and therefore the range of f has exactly 50 elements.