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SAT Math Prep
SAT Math Prep
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A Review for the SAT Math portion
Flashcards
29 cards
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Practice quiz
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Questions
29
Answers
1
What is the equation for finding the axis of symmetry in a quadratic function?
x = -b/2a
x = -2/ba
x = a/2b
x = b/2a
2
If
a
2
b
2
=3
and
ac-bd=4
, then which of the following equals
a
3
b
2
c-a
2
b
3
d
?
3
12
1
7
3
In the function y = (x-h)
2
+k, the point (h, k) represents:
the vertex
the y intercepts
the axis of symmetry
the x intercepts
4
For a polynomial
p(x),
the value of
p(3)
is -2. Which of the following must be true about
p(x)
?
x-5 is a factor of p(x)
x+2 is a factor of p(x)
The remainder when p(x) is divided by x-3 is -2
x-2 is a factor of p(x)
5
Factor
x
3
-3x
2
-x+3
(x-1)(x+6)(x+3)
(x-1)(x+1)(x-3)
x2(x-3-x+3)
(x+3)(x-3)(x+1)
6
Look at picture.
2m+14
m+6
m+7
3m+21
7
Simplify the following. For all x and y where x does not equal 2y
-2
2y-x
2(x-2y)
0
8
Solve for x using the Quadratic Equation.
4x
2
+9x+2=0
x= 2, 1/4
x=-4, -1/2
x= -2, -1/4
x=4, 1/2
9
What is the equation for simple interest?
A = P(1+(r/n))nt
A = P(1+rt)
A=P(1+r)t
10
What is the sum of all values of
m
that satisfy
2m
2
-16m+8 = 0 ?
8
-4 (sqrt(3))
4 (sqrt(3))
-8
11
In the equation,
2x(3x+5) + 3(3x+5) = ax
2
+bx+c,
a, b, and c are constants. What is b?
1
-19
6
19
12
When 4 times
x
is added to 12, the result is 8. What # results when 2 times
x
is added to 7 ?
9
5
8
-1
13
Solve for x.
x
2
-14x+30=6
x = 7
x = 25
x = 32, -18
x = -32, 18
14
If
3x-y=12,
what is the value of 8
x
/2
y
?
82
44
The value cannot be determined from the information given.
212
15
In the xy-plane, the point (3,6) lies on the graph of the function f(x)=3x
2
-bx+12. What is b?
5
11
9
19.5
16
Which of the following is equivalent to
9a
4
+12a
2
b
2
+4b
4
?
(9a2+4b2)2
(9a+4b)4
(3a+2b)4
(3a2+2b2)2
17
A function
f
satisfies
f(2)
=3 and f(3)=5. A function g satisfies g(3)=2 and g(5)=6. f(g(3)) = ?
5
6
2
3
18
y=x
2
-6x+8
represents a parabola in the
xy
-plane. Which of the forms displays the
x
-intercepts?
y = (x-2)(x-4)
y = x(x-6) + 8
y-8 = x2-6x
y+1 = (x-3)2
19
If
5x+6 = 10
, what is the value of
10x+3
?
9
4
20
11
20
Factor
4x
2
-19x+12
(4x+3)(x+4)
(x-4)(4x-3)
(x-16)(x-3)
4(x-12)(x-3)
21
Divide x
2
-9x-10 by x+1
x+5
x+10
x-5
x-10
22
Multiply:
(3x+2)(2x-4)
6x2-8x-8
5x2+x-2
x2+5x-2
6x2+16x+8
23
Complete the square and then find the vertex of
x
2
+6x+3=0
(x+3)2-6=0, vertex = (-3,-6)
(x-5)(x+2)=0, vertex = (5, -2)
(x+3)2-6=0, vertex = (3,6)
24
Factor
x
2
-49
(x-7)2
(x+7)(x-7)
(x+7)2
25
What is the axis of symmetry of
y = -x
2
+5x+1
x = -5/2
x = -1/10
x = 1/10
x = 5/2
26
Look at picture.
0.357
0.333
0.410
0.250
27
Look at picture.
III only
II only
I and II only
I only
28
If
(x+y)
2
=10
and
(x-y)
2
=6
, what is
4xy
?
1
-4
4
10
29
If (x-1)/3=k and k=3, what is the value of x?
10
4
2
9
