The angle of rotation, θ, is a(n) angle used to rotate the xy-coordinate plane to a new x'y'-plane for graphing a rotated conic section.

Which is the completely factored from of xy^3-x^3y

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.

Which of the following is an example of a rational number? a. π b. √ 9 c. √ 8 d. 3.8362319