Let

yequals=left bracket Start 3 By 1 Matrix 1st Row 1st Column 3 2nd Row 1st Column negative 8 3rd Row 1st Column 3 EndMatrix right bracket

3

−8

3

,

Bold u 1u1equals=left bracket Start 3 By 1 Matrix 1st Row 1st Column negative 2 2nd Row 1st Column negative 4 3rd Row 1st Column 1 EndMatrix right bracket

−2

−4

1

,

Bold u 2u2equals=left bracket Start 3 By 1 Matrix 1st Row 1st Column negative 4 2nd Row 1st Column 1 3rd Row 1st Column negative 4 EndMatrix right bracket

−4

1

−4

.

Find the distance from y to the plane in

set of real numbers R cubedℝ3

spanned by

Bold u 1u1

and

Bold u 2u2.