Key Words
Formulae
Unit 1
Unit 2
Unit 3
100

The most common value.

What is the mode?

100

A=0.5bh

What is the area of a triangle?

100

log28

What is 3?

100

The equation of a straight line is y = 2x - 7.  The equation of a parallel line crossing the y-axis at 5.

What is y = 2x + 5?

100

The square root of the variance.

What is standard deviation?

200

The highest power of x is one.

What is linear?

200

u= u1+(n - 1)d

What is the nth term of an arithmetic sequence?

200

The first 5 terms of the sequence given by 

u= 2n2

What is 2, 8, 18, 32, 50?

200

A straight line that a graph approaches ever more closely without actually touching it.

What is an asymptote?

200

The median of 8, 14, 20, 1, 6, 6, 13, 12, 4.

What is 8?

300

A sequence made by adding the same value each time.

What is an arithmetic sequence?

300

x=-b/2a

What is the formula for the axis of symmetry of a quadratic function?

300

The 20th term of an arithmetic series with first term 7 and common difference 5.

What is 102?

300

The horizontal asymptote of the graph y = x-1.

What is the x-axis?

300

The mean of 8, 14, 20, 1, 6, 6, 13, 12, 4.

What is 9.33?

400

Greek letter used to mean 'sum of'

What is sigma?

400

ax + by + d = 0

What is the equation of a straight line?

400

The 8th term of a geometric series with first term 3 and common ratio 2.

What is 384?

400

The coordinate of the minimum value of 

y = x- 8x +17

What is (4, 1)?

400

The interquartile range of 8, 14, 20, 1, 6, 6, 13, 12, 4.

What is 8.50?

500

A fixed sum paid at regular intervals.

What is an annuity?

500

u= u1rn-1

What is the formula for the nth term of a geometric sequence?

500

Solution to 5x = 100 (to 3 sf).

What is 2.86?

500

The transformation to turn y = cos x into y = 3 cos x.

What is a stretch parallel to the y-axis with scale factor 3?

500

The standard deviation of 8, 14, 20, 1, 6, 6, 13, 12, 4.

What is 5.56?

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