1. Slot Work Solve for x. 6(x – 2) = x + 13 5y – 3 = 2(y + 12)
4k – 3 = 3(k + 4)
5(m + 3) = 3(m + 9)
-(8 – x) = 2(x – 1)
Riddle:What gets wetter the more it dries?

2. QUIZ TIME!!!

3. Problem of the Day
A moving van travels 50 miles per hour. Use the equation y = 50x. How far will the van travel in 4.5 hours?
225 miles

4. Table of Contents
Date Target solution of an equation

5. An EQUATION IN TWO VARIABLES is exactly what it implies: 2x - y = 5
YIP: To find the SOLUTION OF AN EQUATION IN TWO VARIABLES when the equation is in function form, you simply pick two numbers that make the equation true.

6. A solution of a two-variable equation is written as an ordered pair.
When the numbers in the ordered pair are substituted in the equation, the equation is true.
(7, 15) is a solution 
15 = 7 + 8
(5, 13) is a solution 
13 = 5 + 8
(x, y) 
Ordered pair

7. Foldable

8. Determine whether the ordered pair is a solution of y = 4x – 1.
Additional Example 1A: Determining If an Ordered Pair Is a Solution of an Equation
Determine whether the ordered pair is a solution of y = 4x – 1.
A. (3, 11)
y = 4x – 1
11 = 4(3) – 1 ?
Substitute 3 for x and 11 for y.
11= 11 ? 
A solution since 11=11.
(3, 11) is a solution.

9. Determine whether the ordered pair is a solution of y = 5x + 3.
Try This: Example 1C
Determine whether the ordered pair is a solution of y = 5x + 3.
C. (10, 53)
y = 5x + 3
53 = 5(10) + 3 ?
Substitute 10 for x and 53 for y.
53 = 53 ? 
(10, 53) is a solution.

10. EXIT TIX
Determine whether each ordered pair is a solution for y = 4x  7 .
1. (2, 15) (4, 9)
3. Use the given values to make a table of solutions.
y = 4x  6 for x = 2, 4, 6, 8, and 10 no
yes x
4x – 6 y
(x, y) 2
4(2)  6
(2, 2) 4
4(4)  6 10
(4, 10) 6
4(6)  6 18
(6, 18) 8
4(8)  6 26
(8, 26)
4(10)  6 34
(10, 34)