# determine equation

• Mar 11th 2010, 01:54 PM
william
determine equation
determine the Cartesian equation of a plane that passes through the points $(1,4,5)$ and $(3,2,1)$ and is perpendicular to the plane $2x-y+z-1=0$
• Mar 11th 2010, 02:27 PM
TKHunny
How about Ax + By + Cz + D = 0?

Then 2A - B + C = 0

Then A + 4B + 5C + D = 0

Then 3A + 2B + 1C + D = 0

What else is needed?