$\"\"$

The vertices are $\"\"$ and the area of the vertices is 4 square units.

Let $\"\"$

(Apply area of a triangle formula: $\"\"$ )

Area = $\"\"$ (Substitute the points) $\"\"$

First we can find the determinant

$\"\"$ $\"\"$

4 = $\"\"$

$\"\"$ $\"\"$

$\"\"$ $\"\"$ $\"\"$

The value of y = 19 or y = 3.