1. Equations & Graphing
Algebra 1, Unit 3, Lesson 5

2. Equations & Graphing – Notes
ordered
pairs
input
output
line
curve y
2x+4=

3. Equations & Graphing – Notes
independent
dependent

4. Equations & Graphing – Notes-1 -3 -2 2 -1 4 4
𝒚= 𝟑 𝟒 −𝟒 −𝟐
𝒚= −𝟓 +𝟒
𝒚= −𝟒 +𝟒
𝒚= 𝟑 𝟒 𝟖 −𝟐
𝒚= 𝟑 𝟒 𝟎 −𝟐
𝒚= −𝟐 +𝟒
𝒚= 𝟎 +𝟒
𝒚= 𝟑 𝟒 𝟒 −𝟐

5. Class Example 1 5 2 2 -4 𝒚=− 𝟑 𝟐 −𝟐 +𝟐 𝒚=− 𝟑 𝟐 𝟒 +𝟐 𝒚=− 𝟑 𝟐 𝟎 +𝟐
𝒚=− 𝟑 𝟐 −𝟐 +𝟐
𝒚=− 𝟑 𝟐 𝟒 +𝟐
𝒚=− 𝟑 𝟐 𝟎 +𝟐
𝒚=− 𝟑 𝟐 𝟐 +𝟐

6. Class Example 2 What is the range of the function? Range = {4, 7, 9}
𝒚=𝟕− 𝟏 𝟐 −𝟒
𝒚=𝟗
𝒚=𝟕− 𝟏 𝟐 𝟎
𝒚=𝟕
What is the range of the function?
𝒚=𝟕− 𝟏 𝟐 𝟔
𝒚=𝟒
Range = {4, 7, 9}

7. Class Example 3 What is the range of the function?
𝒚=− 𝟐 𝟑 −𝟏𝟐 +𝟗
𝒚=𝟏𝟕
𝒚=− 𝟐 𝟑 −𝟔 +𝟗
𝒚=𝟏𝟑
What is the range of the function?
𝒚=− 𝟐 𝟑 −𝟑 +𝟗
𝒚=𝟏𝟏
Range = {11, 13, 17}

8. Class Example 4 What is the range of the function?
𝒚=𝟕−𝟒(−𝟑)
𝒚=𝟏𝟗
𝒚=𝟕−𝟒(−𝟏)
𝒚=𝟏𝟏
What is the range of the function?
𝒚=𝟕−𝟒(𝟓)
𝒚=−𝟏𝟑
Range = {-13, 11, 19}