Determine Whether the Three Points Are Collinear $y = [ [ x ] ]$

Multiple Choice

Determine whether the three points are collinear.
-Which is not the graph of a function? What is its equation?

A) graph D; $y = [ [ x ] ]$
B) graph B; $x = y ^ { 2 }$
C) graph C; $\mathrm { y } = \sqrt { \mathrm { x } }$
D) graph $A ; y = x$