Download Warm-Up 5/14/08

Warm-Up 5/14/08
Evaluate the expression.
1.) 81 2.)  25 3.)  1
Solve the equation.
2
2
5.)x  64
6.)x  63
8.)5 x  44  81
2
4.) 1296
7.)-8x  48
2
Review Homework # 6
• Sec.9.1 pg.502 # 16-64 (ALL)
• Sec.9.2 pg.508 # 18-48 (ALL)
Sec.9.3 Simplifying
Radicals
Simplify the expression
1.) 40
2.) 63
3
3.)
16
6
4.)
7
5.)5 81
CW # 1
1.) 20 2.) 12 3.) 40
3
6.)
4
13
11.)
25
9
7.)
16
3
8.)
25
11
12.)
36
4.) 18
5.) 48
20
9.)
49
1
13.)
3
7
10.)
9
2
14.)
5
2
15.)
3
Sec.9.4 Graphing
Quadratic Functions
Example in the Book
Decide whether the
parabola opens up or down.
1.) y  2 x
2
2.) y  4 x
2
3.) y  x  4 x  1
2
4.) y  4 x  4 x  7
2
CW # 2-Decide whether the
parabola opens up or down.
2
1.) y  8 x
2
2.) y  3 x
2
3.) y  4 x  8 x  3
2
4.) y  x  x  4
2
5.) y  3 x  2 x  1
2
6.) y  3 x  3 x  4
2
7.) y  2 x  5 x  3
Find the coordinates of the
vertex. Make a table of values.
1.) y   x
2
2.) y  2 x  4
2
3.) y  2 x  4 x  1
2
CW # 3- Find the coordinates of
the vertex. Make a table of values.
1.) y  x
2
2.) y  x  2
2
3.) y  x  2 x
2
4.) y   x  1
2
5.) y  2 x  4 x  1
2
6.) y  3x  6 x  2
2
Sketch the graph of the function. Label
the coordinates of the vertex.
1.) y  2 x
2
2.) y   x  1
2
3.) y  4 x  8 x  3
2
CW # 4-Sketch the graph of the function.
Label the coordinates of the vertex.
1.) y  2 x
2
2.) y   x  3
2
3.) y  2 x  4
2
4.) y  x  2 x
2
5.) y  x  2 x  3
2
Sec.9.5 Solving
Quadratic Equations
by Graphing
X-intercepts=Roots=Solutions
y  x  2x  3
2
Use a graph to estimate the
solution of the equation.
1.) x  2 x  3
2
2.)-x  4 x  5
2
CW #5- Use a graph to estimate
the solution of the equation.
1.)2 x  4 x  6
2
2.)x  4 x  5
2
3.)-x  2 x  3  0
2
Homework # 7
• Sec.9.3 pg.514 # 21-66 (ALL)