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Lesson 13.6 – Writing
Equations in SlopeIntercept Form
8.F.4 – Construct a function to model a linear
relationship between two quantities. Determine the
rate of change and initial value of the function from a
description of a relationship or from two (x, y) values,
including reading these from a table or from a graph.
Interpret the rate of change and initial value of a linear
function in terms of its graph or a table of values.
Find the slope of the line.
Today you will learn…
to write an equation of a line in slope-intercept
a. find slope
b. y-intercept
y = mx + b
On Your Own
Extra Example
Write an equation of the line that passes
through the points (0, -1) and (4, -1).
On Your Own
Exit Ticket
Writing Prompt:
For a line that has been graphed in a
coordinate plane, you can write the equation
Find the slope and y-intercept
pp. 606 – 607
1 – 4, 6 – 10 even, 11 - 24