October 04, 2012
Which of the following inequalities represents the graph
shown below on the real number line?
-6 -5 -4 -3 -2 -1
A.
-6 ≤ x < 1
B.
-5 ≤ x ≤ 0
C.
-5 < x ≤ -1
D. -5 < x ≤ 0
E.
-4 ≤ x < -1
0
1
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October 04, 2012
f(x) = 3x2 + 12x - 5
October 04, 2012
October 04, 2012
October 04, 2012
October 04, 2012
Write the equation of quadratic
function.
(3, 4)
Vertex (2, 1)
October 04, 2012
October 04, 2012
3.3.2 Homework
p. 152 25-55 odds
October 04, 2012
1. Graph f(x) = 2/3x - 4
2. Graph f(x) = 1/2(x - 2)2 + 2
October 04, 2012
3. Is the function linear?
{(2, 5), (4, 8), (6, 11), (8, 14), (10, 16)}
4. f(x) = 3x + 1
g(x) = -4x - 5
When is f(x) < g(x)?
October 04, 2012
5.
f(x) = x2 + 8x - 20
a)
Find the vertex
b)
Find the y-intercept
c)
Find the x-intercept(s)
October 04, 2012
6. C(x) = 0.38x + 5 represents the cost for international calls for a certain cellular
phone plan, where x is the number of minutes used.
a) What is the cost if you make 50 minutes of international calls?
b) For how many minutes could you talk if you paid $16.40?