2017­1­26 slope intercept form .notebook
January 26, 2017
Today is Thurs
1/26
Do Now:
-Take out HW
-Take calculator
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Slope Intercept HW - Front
and back
*Midterm Friday 2/3*
Warm Up What is the slope of the line that contains the points (2,4) and (­8, 9)?
What does the word intercept mean?
What do you think a y­intercept on a graph is?
2017­1­26 slope intercept form .notebook
Homework answers
January 26, 2017
2017­1­26 slope intercept form .notebook
January 26, 2017
Today's Objective:
Interpreting slope-intercept formula
Vocab:
y-intercept
The value of y
where the line hits
the y-axis
2017­1­26 slope intercept form .notebook
January 26, 2017
Equation Slope y­intercept
2
y = x + 2
3
Equation Slope y­intercept
y = 4x ­ 6
2017­1­26 slope intercept form .notebook
January 26, 2017
Slope Intercept Form of a Line
y = mx + b
m = slope
b = y-intercept
So...Given the slope and y-intercept,
can you find the equation of the line?
1. slope = -5
y-intercept = 4
Equation_________________
2
m
=
2.
3
b = -2
Equation_________________
2017­1­26 slope intercept form .notebook
3. slope = 3
January 26, 2017
y-intercept = 4
Equation_________________
4. m = -3
b = -6
Equation_________________
5.
If the equation of a line is y = 5x - 2
what is the slope? What is the y-intercept?
slope____________
y-intercept_______
6.
If the equation of a line is 2x + y = 5
what is the slope? What is the y-intercept?
slope____________
y-intercept_______
2017­1­26 slope intercept form .notebook
Find the equation of the line
m = y­intercept = equation:
January 26, 2017
2017­1­26 slope intercept form .notebook
January 26, 2017
Find the equation of the line
m = y­intercept = equation:
Use the slope and y-intercept to graph
y = 2x + 1
m = b =
2017­1­26 slope intercept form .notebook
January 26, 2017