Science:Math Exam Resources/Courses/MATH152/April 2022/Question A08/Statement

Let $W$ be the plane in $\mathbb {R} ^{3}$ through the points

$$(1,1,0),\ (2,-1,1),\ (0,1,c).$$

For what value (or values) of $c$ does the plane pass through the point $(1,-1,2)$?