Question

The table shows ordered pairs of the function y = 16 + 0.5x .

A 2-column table with 6 rows. The first column is labeled x with entries negative 4, negative 2, 0, 1, x, 10. The second column is labeled y with entries 14, 15, 16, 16.5, y, 21.
Which ordered pair could be the missing values represented by (x, y)?

(0, 18)
(5, 19.5)
(8, 20)
(10, 21.5)

Answer 1

Use y = 16 + 0.5x.

Check each pair:
- (0,18): y = 16 + 0.5(0) = 16 ≠ 18
- (5,19.5): y = 16 + 0.5(5) = 18.5 ≠ 19.5
- (8,20): y = 16 + 0.5(8) = 20 ✓
- (10,21.5): y = 16 + 0.5(10) = 21 ≠ 21.5

So the correct pair is (8, 20).