Warm-up p 499 check skills (1 – 12)

Quiz 1.If z=30 when x=3 and y=2, write the function that models the relationship “z varies directly with x and inversely with y”. 2.Compare the graphs of and 3.Compare the graphs of and 4.Find the points of discontinuity of 5.Find the points of discontinuity of

Section 9-4: Rational Expressions Goal 1.03: Operate with algebraic expressions (polynomial, rational, complex fractions) to solve problems.

Simplifying Rational Expressions -27x 3 y 9x 4 y -6 – 3x x 2 – 6x + 8

2x 2 – 3x – 2 x 2 – 5x + 6 6x 2 + 9x 3x

Multiplying and Dividing Rational Expressions 4x 2 7y 5y 12x 4 8y – 4 5y – 15 10y – 5 3y – 9

x 2 – 5x + 6 x 2 + 3x + 2 x 2 – 4 x 2 – 2x – 3 7x 21x 3 4y 3 8y

Classwork P 501 #2-18 Even