Graphing Using The Slope And Y Intercept
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3Algebra Part 3
Name____________________________
Unit 3
Date________________
Warm-up
Find the slope of the line passing through the given points and describe the lines.
1. (4, 2) and (6, 8)
2. (-3, 0) and (2, -5)
3.
Guided Notes
Graph Using Slope-Intercept Form
Finding the Slope and y-Intercept of an Equation:
Words
Symbols
Graph
An equation of a line written
in the form y = mx + b, is
y = mx + b
called _____________________________
where m is the _____________and b is the
_________________ of the equation’s
slope y-intercept
graph.
y = 3x + 1
EXAMPLE:
Identify the slope and y-intercept of the line with the given equation.
a. y = 3x + 4
b. 3x + y = 2
Solution
a. Since the equation is in y = mx + b form, the slope of the line is ___________, and the
y-intercept is ________.
b. Rewrite the equation in slope-intercept form by solving for y.
y = ___________________
the slope of the line is ______________, and the y-intercept is ___________________.
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