Equations of Lines

If you are asked to find an equation for a line, immediately write down y = mx + b because that's where you are headed. Sometimes you are given a point and a slope; other times you are given two points. That's all the information you need.

If you are given a graph and need to read points, make sure you are 100% accurate when you read the coordinates. Sometimes, if the graph is very clear, you can read the y-intercept and count off the slope, like you did last night.

Check out this website. It explains point-slope form (NOT slope-intercept form) for the equation of a line. That's what tonight's homework is about. The website uses (x sub 1, y sub 1) instead of (h, k) for the given point.

Homework:

• Finish Lesson 6-4
• Complete Covering the Ideas in 6-5.

More Slope!

It's so important...you can never get enough practice with slope. Work carefully tonight.

Homework: (to be finished before Glee)

• Lesson 6-3, Covering the Ideas and Applying.

Slope

I found a nice lesson in coolmath for you. It's always a good idea to read about a math concept a second way.

Remind me to give you the Lesson Masters

Homework:

• Be sure to finish all of Lesson 6-1.
• Lesson 6-2, Covering the Ideas.