Writing Linear Equations from a Set of Coordinates

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Presentation transcript:

Writing Linear Equations from a Set of Coordinates 2.22

Do Now Complete #1 a) y = 2x + 1 b) 𝑦=− 3 2 𝑥+1 c) y = 2x + 3

2) What about the equation for this line? What’s different about this graph that doesn’t allow us to use our shortcut? There must be another way!

#2 Calculate the slope. m = 8 5 What’s the y-intercept? b = 4.?????

#2 Remember the pizza! We can use the point-slope form of a line to write a linear equation when we don’t know the y-intercept. Let me demonstrate how to do this on the board!

Group Time! Work out the rest of the problems with your teammates… AS A TEAM! Pool your brain power!

Closure Let’s do #5 F together on the board.