Lesson Plan

Treat slope-intercept, point-slope, and standard form as one line written three ways, and read the slope and a point on the line from whichever form is given, without converting

Read a point and the slope directly from point-slope form, handling the sign convention correctly

Extract the slope from standard form using the -A/B shortcut

Convert an equation among all three forms

Choose the form best suited to the information a question supplies

"A linear equation in two variables can be used to represent a constraint or condition on two variable quantities in situations where neither of the variables is regarded as an input or an output. A linear equation can also be used to represent a straight line in the coordinate plane." "Make connections between: » an algebraic representation and a graph of a linear equation in two variables not in context. » a table and an algebraic representation or between a table and a graph of a linear equation in two variables not in context." "Interpret the graph of a linear equation in the form Ax + By = C in a context."