Review & Preview

1. Review & Preview • Assessment over Linear Functions: before break • Reviewed Assessment: Last Thursday when we returned • Results: re-teaching and more practice are necessary • Moving forward • Retake tentatively scheduled for Friday (perhaps more like next Tuesday) • Rationale: Big Ideas you need for 9th grade Algebra I

2. Review & Preview • Moving forward • What are the big ideas? • Writing a linear function given a graph • Writing a linear function given a table • Writing a linear function given a scenario • Writing a linear function given a point and slope

3. Writing an equation from a graph Slope (m) Y-intercept (b) Y = mx + b Pick two points on the line Rise/Run Travel along the y-axis Where do the line and y-axis intersect?

4. Examples -3 -5 2 3 Y = mx + b Y = mx + b 4 0 Y = -3/2x + 4 Y = -5/3x + 0

5. Guided Practice Draw a line from the cannon to Bowser Find the equation of the line Reduce your slope if possible!

6. Name:_________________________ Date:__________ Period:_______Name:_________________________ Date:__________ Period:_______ Super Mario Equations Draw a line from each cannon to Bowser. Then, help aim the cannons by finding the equation that will hit Bowser. #2) Y = #1) Y = #4) Y = #3) Y = #6) Y = #5) Y =

7. Independent: Rally-Write • Partner A and Partner B • Partner A draws a graph on the coordinate plane • Partner B looks at the graph and finds the linear equation • Partner A coaches/praises • Partner B erases the graph and draws a new one • Partner A looks at the graph and find the linear equation • Partner B coaches/praises • Continue until each person has completed 8.

8. Rally Write

9. Exit Slip • 30 - second speech • For someone who is not here today, write a 30- second speech to explain to someone how to write an equation for a line given a graph.