Review Week #1

Combining Like Terms

100

7x - x + 19

6x + 19

200

3x + 8y + 2x² - x

2x + 8y + 2x²

300

2xy + 5xy + 7y - 4x

7xy + 7y - 4x

400

9y + 3 - 4x - 2y - 3x - 5

7y - 7x - 2

500

2xy - 8x + 4xy² + x - 3x²y

2xy - 7x + 4xy² - 3x²y

Evaluating Expressions

100

Evaluate x² - x + 2x

when x = 3

12

200

Evaluate 3x - y²

^{when x = 3 and y = 4}

-7

300

Evaluate 2xy + 5y 

when x = 7 and y = -3

-57

400

Evalute (2xy)/y

when x = 7 and y = 2

14

500

Evaluate 3x(y-z) + 17

when x = -1, y = 5, and z = 3

11

Adding Polynomials

100

(3x² + 5x - 3) + (x² - 5x + 1)

4x² - 2

200

(5x⁴ + 2x³ + 3x² + 12) + (7x³ + 4x² + 3)

5x⁴ + 9x³ + 7x² + 15

300

(10xy + x) + (-3xy + y)

7xy + x + y

400

(8y + 4y² - 12) + (5 + 3y³ - 13y)

3y³ + 4y² - 5y - 7

500

(3x² - 2x + 7) + (4x² + 6x - 8) + (-5x² + 4x - 5)

2x² + 8x - 6

Subtracting Polynomials

100

(5x - 2) - (7x - 3)

-2x + 1

200

(3x³ - 4x²) - (2x³ + 3x² - x)

x³ - 7x² + x

300

(6x² - 3x + 4) - (-2x² + 2x - 2)

8x² - 5x + 6

400

(-5x³ - 2x² + 7) - (4x³ + 7x² - 3x + 2)

-9x³ - 9x² + 3x + 5

500

(3y³ - 5y² + 9y - 10) - (2y³ + 8y - 2)

y³ - 5y² + y - 8

Wild Card

100

How many kids does Mrs. Lam have?

2

200

Does Ms. Watson like Dunkin or Starbucks better?

Starbucks !!

300

What does the "b" stand for in y=mx+b?

y-intercept

400

Ms. Watson uses this comparison when describing how to combine like terms. She says you can only combine terms that are in the ______ _______

same family

500

How can you determine if a relation is a FUNCTION?

If the x's do NOT repeat, it IS a function

If the x's DO repeat, it is NOT a function

The x-values can't be in more than one relationship