Lesson 1.1 Practice B Functions Worksheet With Answer Key
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12Practice B
LESSON 1.1
For the following functions (a) tell whether the graph opens up or opens down, (b) find the vertex, and (c)
find the axis of symmetry
1.y = 3x
2
+1
2.y = 2x
1
2
2x
2
3.y = 3x
4.y = 4x
2x +9
2
5.y = 5x
5x +7
2
6.y = 2x
3x + 3
2
Match the equation with its graph.
7. y = x
+ 5x 2
2
8. y = x
+ 5x 2
2
1
2
9. y =
x
2
4
A.
B.
C.
Graph the function. Label the vertex and axis of
symmetry.
3
2
10. y = x
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