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SAT Prep Skills 21 - 49
If the parent function is y = x2, then y = (x + 1)2
When you see a right triangle, try
SAT Prep Skills 21 - 49
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SAT Prep Math
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Answers
1
When you see a right triangle, try
the pythagorean theorem
the 180 degree theorem
the vertical angle theorem
the mean value theorem
2
If the parent function is y = x
2
, then y = (x + 1)
2
moves the graph right 1
moves the graph left 1
moves the graph down 1
moves the graph up 1
3
a
0
=
a
1
0
cannot be found
4
Find the 59th term in the repeating sequence: 7, 3, 1, 0, 7, 3, 1, 0, 7, 3, 1, 0, ....
3
0
1
7
5
The ratio of the sides for a 30-60-90 triangle are...
1:1:√3
1:√3:2
1:2:√3
1:1:√2
6
To solve a sequence question....
Write the next bunch of terms until you see repeating patern
use the correct formula
add one to each previous term
work out the problem in your head
7
Directly proportional means ...
y = k√x
y = kx
y = k/x
y = kx
8
a
2
/ a
5
a7
a3
a-3
a10
9
For y = ax
2
+ bx +c, the
c
tells you
the y intercept
the slope
whether it opens left or right
whether it opens up or down
10
For the equation y = ax
2
+bx +c, the
a
tells you...
whether it opens left or right
whether it opens up or down
the slope
the y intercept
11
a
5
/ a
2
a3
a-3
a7
a10
12
Find a
-2
a√2
1/a2
a2
a/2
13
a
2
x a
5
=
a10
a-3
a7
a3
14
If the parent function is y = x
2
, then y = (x-1)
2
moves the graph down 1
moves the graph left 1
moves the graph right 1
moves the graph up 1
15
Remainders are what's left over when you...
Use long division
Add
Multiply
Subtract
16
If the parent function is y = x
2
, then y = x
2
- 1
moves graph right 1
moves graph down 1
moves graph left 1
moves graph up 1
17
When you see "median" or "mode", you should...
group the data
rewrite the data as a list in order
average the data
sum the data
18
When a diagram is not drawn to scale, then.....
redraw it
guess
skip the question
estimate the answer
19
Inversely proportional means....
y = kx
y = k/x
y = k √x
y = kx
20
If the parent function is y = x
2
, then y = 2(x)
2
makes the graph fatter
reflects the graph across the x axis
reflects the graph across the y axis
makes the graph skinnier
21
a
4/3
=
a 3/4
∜a3
∛a4
a4.3
22
(a
2
)
5
=
a32
a7
a10
a3
23
Translate the following from English to math: Ten less than twice a number is four
10 - 2x = 4
2x-4 = 10
4- 2x = 10
2x - 10 = 4
24
When you see probability....Use the equation....
sum = average * # of items
average = sum / # items
want / total
total / want
25
When you see absolute value, look for ...
Look for 0
Only the positive answer
Only the negative answer
Keep your eye out for both positive and negative answers
26
Similar triangles have sides that are
90 degrees
180 degrees
congruent
proportional
27
"Use the diagram" to estimate an answer. Translate into decimals any answers that contain ___
√ or π
factors
multiples
integers
28
When you see a "weird symbol question", you should...
all of the above
remember that no one has seen this symbol before
relax
follow the directions given in the question
29
If the parent function is y = x
2
, then y = x
2
+1
moves graph right 1
moves graph down 1
moves graph left 1
moves graph up 1
30
If the parent function is y = x
2
, then y = 0.5 (x)
2
makes the graph fatter
reflects across the x axis
reflects across the y axis
makes the graph skinnier
31
The sides of a 45:45:90 triangle are...
1:1:√2
1:1:√3
1:√3: 2
1:2:√3
