Bell Work
Graph the equation.
1.
3
y   x2
2
12/5/14
Bell work log due TODAY!!!
1) Put in slopeintercept form.
2) Find m and b.
b = beginning
m = move
rise
m
run
3) Plot the
y-intercept.
4) Plot more
points by using
the slope.
5) Make a line
by connecting
the dots.
Yesterday’s Homework
1. Any questions?
2. Please pass your homework to the front.
• Make sure the correct heading is on your paper.
• Is your NAME on your paper?
• Make sure the homework is 100% complete.
• Incomplete work will NOT be accepted.
Heading
4/9/2015
5.5B Slope-Intercept Form
(not in function form)
TSWBAT: graph a line using the slope
and y-intercept not in slope-intercept
form.
Students graph a linear equation and compute the
x- and y- intercepts (e.g., graph 2x + 6y = 4). They
are also able to sketch the region defined by linear
inequality (e.g., they sketch the region defined by
2x + 6y < 4).
Notes
• Rules for Graphing by Slope-Intercept Form
1. Put in slope-intercept form.
2. Find the slope (m) and y-intercept (b).
3. Plot the y-intercept.
• b = beginning
4. Plot more points by using the slope.
• m = move
5. Make a line by connecting the dots.
Notes
Find the slope and y-intercept.
Ex.
Ex.
Ex.
3x  y  7
Make
4 x  2itylook
 10
3Make
x  2ity look
 8 like
like
slope-intercept
slope-intercept
3x
 3x
4x
 form!
4x

3x
 3x form!
Rewrite
Rewrite
y  3x  7
2 y the
4 x  10
2 y the
3x  8
Slope-Intercept
y  m x  b Slope-Intercept
2
2 2
2
2 2
Formula!
Formula!
3
m  33
y  2x  5
m
y   x 4
2
y  mx  b
b7
y  m xb
m2
33
m   , bb44
m
bb  55
22
Notes
Graph.
Ex.
3x  y  2
3x
 3x
y  3x  2
m  3 b  2
b = beginning
m = move
rise
m
run
3 3
 
1 1
1) Put in slopeintercept form.
2) Find m and b.
3) Plot the yintercept.
4) Plot more
points by using
the slope.
5) Make a line
by connecting
the dots.
Notes
Graph.
Ex.
4x  3 y  9
4x
 4x
3 y  4 x  9
3
3
3
4
y   x3
3
4
m b3
3
rise
m
run
4 4


3 3
b = beginning
m = move
1) Put in slopeintercept form.
2) Find m and b.
3) Plot the yintercept.
4) Plot more
points by using
the slope.
5) Make a line
by connecting
the dots.
Notes
Graph.
Ex.
6 x  4 y  16
6x
 6x
4 y  6 x  16
4 4 4
3
y  x4
2
3
m
b  4
2
rise
m
run
3 3
 
2 2
b = beginning
Now you try.
m = move
1) Put in slopeintercept form.
2) Find m and b.
3) Plot the yintercept.
4) Plot more
points by using
the slope.
5) Make a line
by connecting
the dots.
Summary
To graph a line first put the equation into slopeintercept form. Now find your slope and __-intercept.
y
________
Begin with your y-intercept and then move according
slope Plot multiple points and graph the ____.
line
to your _____.
Today’s Homework
Rules for Homework
1. Pencil ONLY.
2. Must show all of your work.
• NO WORK = NO CREDIT
3. Must attempt EVERY problem.
4. Always check your answers.
Homework
5.5B
Graph
1.
 2x  y  3
2.
 3x  y  5
3.
 5x  y  1
4.
4x  y  1
5.
2 x  y  3
6.
3x  y  4
7.
9x  3 y  6
8.
8x  4 y  24
9.
6 x  2 y  18
12.
 3x  2 y  12
10.
3x  2 y  6
11.
4 x  3 y  15
Ticket Out the Door
Complete the Ticket Out the Door without talking!!!!!
Talking = time after the bell!
Put your NAME on the paper.
When finished, turn your paper face DOWN.
Graph.
2 x  3 y  12