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GCSE Maths > Formulas > Flashcards

Formulas Flashcards

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1
Q

What is the equation for a straight line?

A

y=mx+c

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2
Q

What does m stand for?

A

Gradient

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3
Q

How do you find out the gradient?

A

Change in y
_______________
Change in x

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4
Q

What does c stand for?

A

Y intercept

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5
Q

What is the rule about interior angles?

A

Interior angles in an n-sided shape add up to 180(n-2)

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6
Q

What does anything to the power 0 equal?

A

1

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7
Q

In a simultaneous equation, what do you do if the signs are the same?

A

Subtract

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8
Q

In a distance - time graph what is the gradient equal to?

A

The speed

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9
Q

On a distance-graph, how do you work out the mean speed?

A

Total distance
________________
Total time

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10
Q

On a speed-time graph, what is the gradient equal to?

A

Acceleration

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11
Q

On a speed Time graph, what does a positive gradient mean?

A

Acceleration

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12
Q

On a speed time graph, what does a negative gradient mean?

A

Deceleration / retardation

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13
Q

In a table, how do you work out the mid-point?

A

a + b
_______
2

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14
Q

In Circle theorems, what is the rule about angle at the centre?

A

The angle at the centre is twice that at the circumference

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15
Q

In Circle theorems, what is the rule about angles on the same arc?

A

Angles at the circumference (standing on the same arc) are equal

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16
Q

In Circle theorems, what is the rule about a cyclic quadrilateral?

A

Opposite angles of a cyclic quadrilateral add up to 180

17
Q

In Circle theorems, what is the rule about angles in a semicircle?

A

The angle in a semicircle is a right angle

18
Q

In Circle theorems, what is the rule about tangents to circles?

A

The angle between a tangent and the radius drawn to the point is 90 degrees. The two tangents drawn from a single point are equal

19
Q

In Circle theorems, what is the alternate segment theorem?

A

The angle between a tangent and a chord is equal to any angle made by that chord in the alternate segment

20
Q

On a histogram, how do you work out the frequency density?

A

Class width

21
Q

On a histogram, how do you work out the frequency?

A

Frequency density X class width

GCSE Maths (1 decks)

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