Answer true or false to each of the following statements and explain your answers. a. The y-intercept of a plane has no effect on the rate at which the plane increases or decreases as one of the...

Answer true or false to each of the following statements and explain your answers.

a. The y-intercept of a plane has no effect on the rate at which the plane increases or decreases as one of the independent variables changes.

b. If a plane has a negative partial slope for the independent variable x1, then  y-values on the plane increase as x1 increases provided the other independent variables remain unchanged.

c. A linear equation that involves independent variables x1 and x2 and that has both partial slopes equal to zero has a graph that is a plane that does not increase or decrease as 1 or x2 change value.