1. Worksheet on back table You need: A ruler 4 Colored Pencils/crayons
I can solve systems graphically and
Identify the number of solutions
Warm Up
Worksheet on back table
You need:
A ruler
4 Colored Pencils/crayons

2. Warm Up I can solve systems graphically and
Identify the number of solutions
Warm Up
Situation
Yasmine has four posters and she buys another two posters each week. Alex has ten posters and gives one away every week.
How many weeks would it take for both of them to have the same number of posters?
Tables X Y

3. Warm Up I can solve systems graphically and
Identify the number of solutions
Warm Up
Situation
Yasmine has four posters and she buys another two posters each week. Alex has ten posters and gives one away every week.
How many weeks would it take for both of them to have the same number of posters?
Graph

4. Warm Up I can solve systems graphically and
Identify the number of solutions
Warm Up
Situation
Yasmine has four posters and she buys another two posters each week. Alex has ten posters and gives one away every week.
How many weeks would it take for both of them to have the same number of posters?
Equations Check
Solution

5. Homework Questions

6. Diamond Problems 12 48 xy x y
x + y 4 16

7. Diamond Problems 36 xy x y
x + y 9 4 13

8. Diamond Problems 31
240 xy x y
x + y 15 16

9. Solving Systems Graphically y=2x+3 y=-x-3
Slope: 2
Up 2, Right 1
y-intercept: 3
These notes are designed to be Guided Notes. The guided notes WS can be found in the A3 folder.
Solution: (-2,-1)
y-intercept: -3
Slope: -1
Down 1, Right 1

10. Check your Answer Algebraically
y=2x+3 (-2,-1) (x,y) -1=2(-2) +3 -1= =-1
y=-x-3 (-2,-1) (x,y) y=-(-2)-3 y=2-3 y=-1
Did the point you found by graphing make both your equations true?
YES! Your answer is correct
No. Something is wrong, go back and check your graph and your algebra.

11. Types of Solutions
When solving a system of equations there are three different types of answers.
One solution – Example we just did
No Solution
Infinite Solutions

12. No Solutions Example y=3x-1 y=3x+2
What do you notice about the lines?
What do you notice about the equations?
Slope: 3
Up 3, Right 1
y-intercept: 2
Slope: 3
Up 3, Right 1
y-intercept: --1

13. Infinite Solutions Example y=1/2x+2 y=2/4x+2
What do you notice about the lines?
Slope: 1/2
Up 1, Right 2
y-intercept: 2
Slope: 2/4
Up 2, Right 4
y-intercept: 2
What do you notice about the equations?

14. Check your answers algebraically
Classwork
15 minutes
Check your answers algebraically

15. Complete and put in the INBOX
Homework:
Page through 5-89

16. Homework
Textbook
Page 219
problesms 5-86 through 5-89