Can someone check my answers? I'm not sure I have them all right...


What is the y-intercept of the plane whose equation is 4x + 5y z = 20?


(0, 4, 0) < my answer


(0, 5, 0)


(5, 0, 0)


(0, 0, 4)




Question 2. Which equation has intercepts at X(1, 0, 0), Y(0, 1, 0), and Z(0, 0, 2)?


x y + 2z = 4


3x 2y + 6z = 12


2x 2y + z = 2


4x 4y + z = 4




Question 3. Which equation is equivalent to x + 3y z = 3?


3x + 6y 3z = 6


4x + 12y 4z = 12


2x + 4y 2z = 8


2x + 3y 4z = 12




Question 4.4. Which of the following points lies in the plane 3x 2y + 4z = 12?


(2, 2, 3)


(5, 15, 2)


(4, 16, 2) < my answer


(4, 3,2)