When sketching addition of ordinates we

add the y values together for each x value

A relation is only a function if

For each x value the is only one y value

The set of all possible x values

A composite function is

A function with another function inside it

When we inverse a function we

Reflect it in the line y=x, Switch x and y

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Year 12 Methods Head Start 2021

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Questions 18

Answers

1
Cos\left(\frac{\pi}{4}\right)=
\frac{1}{2}
0
\frac{\sqrt{2}}{2}
\frac{\sqrt{3}}{2}
2
When sketching addition of ordinates we
give up
add both the x and y values together
add the x values together for each y value
add the y values together for each x value
3
\sin\left(\frac{\pi}{6}\right)=
\frac{\sqrt{2}}{2}
\frac{\sqrt{3}}{2}
\frac{1}{2}
1
4
\tan\left(\frac{\pi}{4}\right)=
0
\frac{\sqrt{2}}{2}
\frac{\sqrt{3}}{2}
1
5
A relation is only a function if
Everything is a function
For each x value the is only one y value
For each y value the is only one x value
They are the same thing
6
The domain is
Any number
The set of all possible x values
the range
The set of all possible y values
7
The set of integers is denoted by
R
Z
Q
N
8
\sin\left(0\right)=
0
\frac{1}{2}
\frac{\sqrt{3}}{2}
1
9
When writing an interval a curved bracket indicates the number is included
False
True
10
Cos\left(\frac{\pi}{3}\right)=
\frac{\sqrt{2}}{2}
0
\frac{1}{2}
\frac{\sqrt{3}}{2}
11
The set of real numbers is denoted by
C
R
Z
Q
12
A composite function is
A function with another function inside it
a relation
Multiplying two functions
Two functions next to each other
13
For a composite function the domain of the inside must fit within the range of the outside function
False
True
14
When we are finding the distance between two lines we use a formula derived from
Calculus
Similar Triangles
Pythagoras
Trigonometry
15
When we inverse a function we
Reflect it in the line y=x
rearrange terms to get x by itself
flip it upside down
Switch x and y
16
An closed circle on a number line indicates the number is included
True
False
17
The set of rational numbers is denoted by
N
Q
Z
R
18
We can only inverse a function if
its above the x axis
it is one to one
its a straight line
it only exists above or below the line y=x

Year 12 Methods Head Start 2021 Flashcards | StudBud