1.
What are the second differences in the
y
-values?
A.
0
B.
–1
C.
1
D.
2
Hint
2.
What type of relationship does the equation have if its second differences are constant?
A.
constant
B.
quadratic
C.
linear
D.
cubic
Hint
3.
What is the relationship between constant second differences and the coefficient of the equation?
A.
the second difference is 2 times the coefficient
B.
the second difference is –2 times the coefficient
C.
the second difference is opposite the coefficient
D.
the second difference is the same as the coefficient
Hint
4.
How many counterexamples are needed to prove a conjecture wrong?
A.
2
B.
3
C.
1
D.
4
Hint
5.
Find the values for
m
and
n
which the conjecture (
m – n
)
2
=
m
2
– n
2
is false.
A.
m
= 1,
n
= 1
B.
m
= 1,
n
= 0
C.
m
= –2,
n
= 0
D.
m
= 1,
n
= 2
Hint