WorksheetsQuarter 3 Review
Total questions: 10
Worksheet time: 19mins
What is the maximum of f(x) = −x2+6x −8 ?
3
1
2
4
Function f is defined as f(𝑥) = 𝑥2 + 8𝑥 + 9 and is graphed below.
TRUE OR FALSE: The axis of symmetry is x = 4.
TRUE
FALSE
Function f is defined as f(𝑥) = 𝑥2 + 8𝑥 + 9 and is graphed below.
TRUE OR FALSE: The vertex is (-4, -7)
TRUE
FALSE
Function f is defined as f(𝑥) = 𝑥2 + 8𝑥 + 9 and is graphed below.
TRUE OR FALSE: The function is decreasing on (-4, ∞)
TRUE
FALSE
Function f is defined as f(𝑥) = 𝑥2 + 8𝑥 + 9 and is graphed below.
TRUE OR FALSE: The average rate of change (slope) from x = -2 to x = -1 is 5
TRUE
FALSE
Function f is defined as f(𝑥) = 𝑥2 + 8𝑥 + 9 and is graphed below.
TRUE OR FALSE: The range is "All Real Numbers"
TRUE
FALSE
Function f is defined as f(𝑥) = 𝑥2 + 8𝑥 + 9 and is graphed below.
TRUE OR FALSE: f(x) has two real zeros
TRUE
FALSE
Function j is defined as j(x) = −2(x−7)2 − 8
How does j compare to f(x)=x2 ?
The function j(𝑥) opens down, and it is translated 7 units to the left and 8 units down.
The function j(𝑥) opens down, and it is translated 7 units to the right and 8 units down.
The function j(𝑥) opens up, and it is translated 7 units to the left and 8 units down.
The function j(𝑥) opens up, and it is translated 7 units to the right and 8 units down.
What is the discriminant? f(x)=−3x2−5x+3
61
-11
51
69
The discriminant of the last problem was 61. What does this mean?
There are no solutions.
There are two real roots.
There are two non-real roots
There is one real root.
There is one non-real root.
