Unit 4 Section 7 Intercepts.notebook
February 01, 2016
Bellringer
Graph x = -3 by plotting ordered pairs.
State the Domain and Range.
x
y
Is this a function? Why or why not?
Apr 17­9:12 AM
Graphing Linear Equations Using Intercepts
x-intercept - x-coordinate that crosses the x-axis (_, 0)
y-intercept - y-coordinate that crosses the y-axis (0, _)
x­int
y­int
(_, 0) (0, _)
State the x-intercept and the y-intercept of each line.
1)
2)
Mar 2­12:29 PM
1
Unit 4 Section 7 Intercepts.notebook
February 01, 2016
x­int
y­int
(_, 0) (0, _)
3) Find the x-intercept and the y-intercept for the graph of y = x - 6.
4) Find the x-intercept and the y-intercept for the graph of x - 2y = 6.
5) Graph x + 2y = 4 using the x- and y-intercepts.
Jan 28­12:27 PM
Graph each equation using the x- and y-intercepts.
7) y = 3
Is this a function?
8) x = -2
Is this a function?
Mar 2­12:43 PM
2
Unit 4 Section 7 Intercepts.notebook
February 01, 2016
9) Graph 3x + 6y = 18 using the x- and y-intercepts.
10) Graph y = -2x + 4 using the x- and y-intercepts.
Apr 3­9:19 AM
11) A graph passes through a point at (0, -10).
Is -10 an x-intercept or an y-intercept?
12) A graph passes through a point at (5, 0).
Is 5 an x-intercept or an y-intercept?
13) Explain why you cannot graph y = 2x by using intercepts only.
Then draw the graph.
Apr 3­9:21 AM
3
Unit 4 Section 7 Intercepts.notebook
February 01, 2016
14) Connor has $18 to buy books at Barnes & Noble. They are having a sale.
Paperback books cost $3 each. The equation y = 18 - 3x represents the
amount of money he has left over if he buys x paperback books. Graph the
equation and describe what the intercepts represent.
Apr 3­9:27 AM
.
Homework:
page 17­ 18
Jan 24­9:00 PM
4