Senior Re-testers ONLY

TAKS Exit Level Mathematics 2010 Released Items
Objective 5
1 Which lists the functions of the form y = ax 2
in order from the narrowest to the widest
graph?
A y =− x 2 , y = x 2 , y = x 2 , y =−2x 2
4 6 3
7
5 4
B y =−2x 2 , y = x 2 , y = x 2 , y =− x 2
6 3 4
5 4 7
C y = x 2 , y = x 2 , y =− x 2 , y =−2x 2
6 3 4
5 4 7
D y =− x 2 , y =−2x 2 , y = x 2 , y = x 2
4
6 3
7
5 4
2 If the graph of a function of the form
y = ax 2 + c has a vertex located above the
origin and opens downward, which of the
following must be true about the values of
a and c ?
A a < 0 and c > 0
B a > 0 and c > 0
C a < 0 and c < 0
D a > 0 and c < 0
Page 10
3 What is the solution set for the equation
4n 2 − 9 = 23?
A {−√ ___
3.5, √ ___
3.5}
B {−4√ __ 2, 4√ __ 2 }
C {−2√ __ 2, 2√ __ 2 }
D {−4, 4}