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Sample Quiz
1. Determine whether if this is a quadratic or not.
X Y
0 0
1 35
2 60
3 75
4 80
5 75
6 60
7 35
8 0
2. Write an equation for the graph that has the following transformations.
a. The graph of y=x2 is vertically stretched by a factor of 10.
b. The graph of y=x2 is vertically compressed by a factor of 0.25.
3. State the a, h, k, value for each equation, then state the transformation.
y = –7(x–4)2 + 10
4. Wright the vertex of each of the following quadratic function.
a. y= –4(x–7)2 + 5 b. y= (x + 4)2 – 11
Answers to Sample Quiz
1. Yes it is a quadratic because the second difference is the same.
2. a. y=10x2
b. y=0.25x2
3. a= –7
h= –4
k= 10
· Reflected on the x–axis.
· Vertically stretched by a factor of 7.
· Translated 4 units to the right.
· Translated 10 units up.
4. a. (7,5) b. (–4, –11)