2016­1­27 slope intercept form.notebook
January 27, 2016
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1/27
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Slope Intercept HW - Front
and back
Warm Up What is the slope of the line that contains the points (2,4) and (­8, 9)?
What does the word intercept mean?
2016­1­27 slope intercept form.notebook
January 27, 2016
Homework answers
Lesson 6: Interpreting slope-intercept
formula
Student Objective
To identify slope and y intercept from an equation
2016­1­27 slope intercept form.notebook
January 27, 2016
Vocab:
y-intercept
The value of y
where the line hits
the y-axis
Equation Slope y­intercept
2
y = x + 2
3
2016­1­27 slope intercept form.notebook
January 27, 2016
Equation Slope y­intercept
y = 4x ­ 6
Slope Intercept Form of a Line
y = mx + b
m = slope
b = y-intercept
2016­1­27 slope intercept form.notebook
January 27, 2016
2016­1­27 slope intercept form.notebook
January 27, 2016
2016­1­27 slope intercept form.notebook
January 27, 2016
Find the equation of the line
m = m = y­intercept = y­intercept = equation:
equation:
y = 2x + 1
m = b =
2016­1­27 slope intercept form.notebook
January 27, 2016
y = 1x ­3
2
m = b =
y = 2x + 3
Identify the slope and y-intercept
m=
b=
2016­1­27 slope intercept form.notebook
January 27, 2016
y = 5x - 1
y = -x + 5
m=
m=
b=
b=
Writing an equation of a line
Remember: y = mx + b
If given m & b, you can write the equation
1) m = 6, b = 4
2) m = -3 , b = 2
3) m = -1 , b= -2
2
4) slope = 2, y-int = -9
2016­1­27 slope intercept form.notebook
January 27, 2016
Challenge:
Mr. Testa wants to paint his new house. He can paint a
wall at a constant rate of 2 square feet per minute.
Assume he paints an area y, in square feet, after x
minutes.
a) Is this describing a linear equation?
b) What is the equation of this scenario?
c) If he paints for 10 minutes, how many
square feet has he painted?