Cos²(x) + sin²(x)
¹/₂[1 - cos(2x)] + ¹/₂[1 + cos(2x)]
[¹/₂ - ¹/₂cos(2x)] + [¹/₂ + ¹/₂cos(2x)]
¹/₂ + ¹/₂ - ¹/₂cos(2x) + ¹/₂cos(2x)
1
If you were to plan a party, you could use a linear equation. for example, the room you are renting is $500. The price for food per person is $10
3,5
1 across and 1 down pattern
find the halfway point