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## y-intercept

###### Middle School Lessons

**Candy Experiment** - Students will create their own data to construct a graph and equation of negative and fractional slope.
**Compare and Contrast** - Students will identify the y-intercept and slope using equations and then use that data to create corresponding tables and graphs.
**Coupon Activity** - Students will create graphs, tables and equations to explain their stories and look at how a graph changes depending on the y-intercept.
**Evaluation Problem** - Students will be given a problem that asks about the amount of money each person has, based on the amount in a piggy bank. They will be given one graph and asked to draw the second graph.
**Graphing Equations** - Students will practice moving between graphs and equations of functions, as well as identifying the y-intercept and slope.
**Graphing Equations - Nonlinear Functions** - Students write equations for three graphs and examine their slopes by comparing and contrasting the graphs. Students also look at the same functions graphed on differently scaled coordinate planes.
**Jason's Tree House** - Students will extract data from a story and use tables and graphs to answers questions about proposed scenarios.
**Race Car Activity** - Students will look at four different graphs to determine which two describe the scenario proposed by the teacher displaying parallel lines and the correct y-intercepts.
**Relating Graphs and Equations - Linear and Quadratic Functions** - Students will generate graphs from given equations and equations from given graphs.
**What Will Happen** - Students will work with equations of functions (both linear and non-linear) to find the y-intercept without graphing.
**Wind-Up Car** - Students will produce an equation from a graph, based on an engineering-context.

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