Mat 1101 Test 4 With Answers - 2009
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1
2Test 4
MAT 1101
Fall 2009
Name ______________________
This test is take-home, so you may use your notes, book, Excel, MathGV, etc. This test is due back to me
at the beginning of class on Monday, December 7, 2009. Late tests will not be accepted. Don’t forget to
simplify all of your answers and attach your work!
2
1. Find the vertices of the functions:
2. Graph the following function: f(x) = 2x
– 8x + 5
2
a) f(x) = 3x
– 42x + 50
x
y
(7, -97)
0
5
1
-1
2
-3
3
-1
2
b) f(x) = –2.9(x – 1.5)
– 3.8
4
5
(1.5, -3.8)
see graph
2
2
3. Solve for x, if possible: 3(x + 7)
= 13
4. Graph the following function: f(x) = – (x + 1)
+ 4
x
y
-3 0
x ≈ -4.9183, -9.0817
-2 3
-1 4
0
3
1
0
5. Given the graph of the quadratic equation at the right, find:
a) the vertex of the equation _____(-2, -1)_______
b) f(0) = __7__
2
c) the equation of the parabola _y = 2(x + 2)
– 1 __
d) the x-intercepts of the equation _-1.2929_, __-2.7071_
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