Lesson 1-2

Lesson 1-9

Review,
page 60

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Evaluating Expressions

Evaluate each expression for the given value(s) of the variable(s).

1. 
   

   3x-2y;x= -l,y = 2 2. -w2 + 3w; w = - 3

   
   


2. 
   

   k = (^3) 4. h- (h2 - l) +2\h = — 1

   
   

   Using Tables, Equations, and Graphs

   
   

   Use a table, an equation, and a graph to represent each relationship

   
   


3. 
   

   B o b is 9 y e a rs o ld e r t h a n h is d o g.

   
   


4. 
   

   Sue sw im s 1.5 la p s p e r m in u t e.

   
   


5. 
   

   Each carton of eggs costs $3.

   
   

* Graphing in the Coordinate Plane

Graph the ordered pairs in the same coordinate plane.

8. (3,-3) 9. (0,-5) 10. (-2,2) 11. (-2,0)

Lesson 2-2 Solving Two-Step Equations

Solve each equation. Check your answer.

12. 5x+ 3 = -12 13. §-1 = 10 14.7x + i 15.x -^1

Lesson 3-7 4ft Solving Absolute Value Equations

Solve each equation. If there is no solution, write no solution.

16. |r+ 2|= 2 17. -3|d -5| = -6


17. -3.2 = |8p | 19. 5|2jc — 7| = 20

Lo o k i n g A h e ad V o ca b u l a r y

2 0. T h e a m o u n t o f m o n e y y o u e a r n f r o m a s u m m e r j o b is dependent u p o n t h e n u m b e r

o f h o u r s y o u w o r k. W h a t d o y o u t h i n k i t m e a n s w h e n a v a r ia b le is dependent u p o n

a n o t h e r v a r ia b le?

21. A relation is a p e r s o n t o w h o m y o u a re r e la te d. I f (1 , 2 ), (3 , 4 ), a n d (5 , 6 ) f o r m a
    mathematical relation, t o w h ic h n u m b e r is 3 re la te d?


22. W hen a furnace runs continuously, t h e r e a re n o b r e a k s o r i n t e r r u p t i o n s i n its
    operation. W hat do you think a continuous g r a p h lo o k s lik e?

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