Problem Solving Tanya bought p pens. She gives away 126 pens. Tanya has 217 pens left. Write an equation that can be used to determine how many pens Tanya originally bought.

Problem Solving Four friends eat at a restaurant. The total cost of the meal is $ They want to include 15% tip and then divide the total cost evenly. How much should each person pay?

x-int: (1,0) y-int: (0,-2)x-int: none y-int: (0,-4)x-int: (-3,0) y-int: (0,9) x-int: (4,0) y-int: (0,2) x-int: (3,0) y-int: (0,-5)x-int: (-7,0) y-int: none

Vocabulary Intercepts

Points where line crosses the x-axis and the y-axis.

Home Repair Renata Jones has $300 for home repairs. A plumber charges her $50 an hour. The equation y = -50x represents the amount of money left in her budget after x number of plumbing hours. Use the intercepts to graph the equation.

Shopping Suzanne has $125 to spend on new shoes. The shoe store is having a sale in which every pair of shoes is priced at $25. The equation y = -25x +125 represents the amount of money Suzanne has left after purchasing x pairs of shoes. Use the intercepts to graph the equation.

Graphing Linear Equations Method 1: Method 2: Method 3: Graph the Line What does the line represent?

Method 1: Using a Table 1.Solve equation for y. 2.Use the table to find 4 ordered pairs. 3.Plot the ordered pairs.

Practice Solving for y.

Method 2: Using x- and y- intercepts x-intercepty-intercept 1.Set y = 0. 2.Solve for x. 3.Graph the x-int. 1.Set x = 0. 2.Solve for y. 3.Graph the y-int.

Find x and y intercept.

Graphing Linear Equations Method 1: Using a Table Method 2: Using x- and y- intercepts Method 3: 1.Solve equation for y. 2.Use the table to find 4 ordered pairs. 3.Plot the ordered pairs. x-intercepty-intercept 1. 1.Set y = 0. 2.Solve for x. 3.Graph the x-int. 1.Set x = 0. 2.Solve for y. 3.Graph the y-int. Graph the Line What does the line represent?

Homework Graphing Activity. 8 points