Question: Choose the graph that connects the points for y=x 2−2.

Answer Choices:

A. Decreasing line
B. Increasing line
C. Downward-opening parabola
D. Upward-opening parabola

Answer: D. Upward-opening parabola

 

Question: Choose the correct graph of y=∣x∣−5.

Answer Choices:

A. V-shape opening up with vertex above the x-axis
B. V-shape opening up with vertex at (0,−5)
C. V-shape opening down with vertex below the x-axis
D. Line with negative slope

Answer: B. V-shape opening up with vertex at (0,−5)

 

Question: Use the graph to determine where the function is increasing, decreasing, or constant.

Answer Choices:

(a) Increasing:
A. The function is increasing on an interval
B. The function is never increasing
(b) Decreasing:
A. The function is decreasing on an interval
B. The function is never decreasing
(c) Constant:
A. The function is constant on an interval
B. The function is never constant

Answer: Increasing on (0,∞); never decreasing; never constant

 

Question: Determine whether the function is even, odd, or neither. Then determine whether the graph is symmetric with respect to the y-axis, the origin, or neither.

Answer Choices:

For parity:
neither
even
odd
For symmetry:
origin
neither
y-axis

Answer: odd; symmetric with respect to the origin

 

Question: Determine if f(x)=x 1/2−3x−4 is a polynomial function. If it is, identify the degree.

Answer Choices:

A. It is a polynomial. The degree is ___
B. It is not a polynomial.

Answer: B. It is not a polynomial.

 

Question: Determine whether the equation log1=1 is true or false. If false, make the necessary change to produce a true statement.

Answer Choices:

A. The statement is false. The correct statement is log1=___
B. The statement is true.

Answer: A. The statement is false. The correct statement is log1=0.

 

Question: What does a solid line mean in the graph of an inequality?

Answer Choices:

A. Points on both sides of the line are solutions
B. The line is part of the inequality’s graph
C. The graph is a half-plane
D. The line is not part of the inequality’s graph

Answer: B. The line is part of the inequality’s graph.

 

Question: Choose the correct graph of g(x)=(49)x.

Answer Choices:

A. Increasing exponential growth curve
B. Decreasing exponential decay curve
C. Increasing curve crossing from negative y-values
D. Decreasing curve falling into negative y-values

Answer: A. Increasing exponential growth curve

 

Question: Choose the correct graph of f(x)=2 x and g(x)=log2x in the same coordinate system.

Answer Choices:

A. Exponential growth and logarithmic curve reflected correctly across y=x
B. Two exponential-type curves
C. Exponential with a decreasing logarithmic-type curve
D. Both curves decreasing / incorrect orientation

Answer: A 1.

 

Question: A researcher designed and conducted an experiment to learn if 350 mg of a certain drug would help patients with bipolar disorder. By designing and conducting this experiment the researcher was able to _____.

Answer Choices:

draw conclusions
demonstrate proof
test the hypothesis
confirm the results

Answer: test the hypothesis 2.

 

Question: The third step in the scientific method involves _____.

Answer Choices:

posing a question
conducting research
sharing the results
developing a hypothesis

Answer: conducting research 3.

 

Question: Nature refers to _____ in development.

Answer Choices:

the genes people inherit
environmental influences
patterns of development
developmental differences

Answer: the genes people inherit 4.

 

Question: Greg, who is 5 years old, is the tallest person in his kindergarten class. When his teacher asked him how he thought he got so tall, he said proudly, “My mom and dad are tall and I eat good food!” Greg’s statement reflects that he understands that human development comes from _____.

Answer Choices:

heredity
the environment
learning
environment and heredity combined

Answer: environment and heredity combined 5.

 

Question: The life-span perspective takes into account development from _____.

Answer Choices:

birth to death
childhood to middle age
the last decade of life
conception to death

Answer: conception to death 6.

 

Question: Which example best illustrates a critical period?

Answer Choices:

a child learning to walk
a child learning a second language before age 4
a fetus developing fingers and toes between 28 and 54 days after conception
a child learning to ride a bike between 5 and 6 years of age

Answer: a fetus developing fingers and toes between 28 and 54 days after conception 7.