19. Compute the value of 'x' and 'y'

The area of the triangle joining the points \((x, 11)\), \((4, y)\) and \((7, 7)\) is zero. If \(y = x + 7\), then compute the value of \(x\) and \(y\).

 

Answer:

 

The value of \(x\) \(=\)  or

 

The value of \(y\) \(=\)  or