Lesson 8-3 Using Slopes and Intercepts part 3 Obj: The student will be able to use slopes and intercepts to graph linear equations HWK: p 353 10-12 all, 21-23 all

Use the table of values from part 2 to graph the equations Use the table of values from part 2 to graph the equations. Use one graph and 3 colors for each problem. Ex 1) y = 2x + 3 y = 2x – 2 y = 2x

Ex 2) y = 3x + 2 y = - 1 2 x + 2 y = x + 2

Journal Entry (put date on paper) What do you notice about all of the lines in Ex 1? What do you notice about all of the lines in Ex 2?

Graph each line using slope and y-intercept Ex 3) y = x – 6 Ex 4) 2x + y = 3

Ex 5) 4x + 3y = 9

Ex 6) The cash register deducts $2 Ex 6) The cash register deducts $2.50 from a $25 Java Café gift card for every medium coffee the customer buys. The linear equation y = -2.50x + 25 represents the number of dollars y on the card after x medium coffees have been purchased. Graph the equation and explain the meaning of the slope and y-intercept

Write the equation of the line that passes through the given points. Ex 7) (-3, 1) (2, -1)

Ex 8) (3, -4) (-1, 4)