Determine whether the three points are collinear.
-$$\text { Which one is the graph of } y = [ [ x ] ] \text { ? What is the value of } y \text { when } x = 1.5 \text { ? }$$
A) graph B; 2.25
B) graph D; 1
C) graph C; 1
D) graph A; 2.25

Question

Quizplus · Accepted Answer

The graph of $y = [[x]]$ represents the greatest integer function, which rounds down to the nearest integer. At $x = 1.5$, the greatest integer less than or equal to 1.5 is 1, so $y = 1$.