We can see here that the point at 5 is shaded in because when we look back to the inequality we see that this sign is shown
This means that 'n' is less than or equal to 5 so we show this by shading the dot above the 5 on the number line in.
Solving in equalities
Example question:
First we need to subtract 3
from 11 which gives us 8. We
now know that 2x is less than
or equal to 8. 8 divided by 2 = 4.
Therefore 'x' is less than or
equal to 4.,
Angles in parallel lines
Vertically opposite angles are EQUAL
Corresponding angles are EQUAL
Alternative angles are EQUAL
Co-Interior angles add up to 180 degrees
Box plots
Example Question:
To do this we need to find 3 things:
We then need to work out what they are
Then draw out the box plot
Interior angles
Finding the interior angle
sum of interior angles = (n - 2) x 180
'n' means: number of sides
Example Question:
Find the interior angle of a regular hexagon
to do this we would need to do the sum of interior angles
divided by number of sides
720 divided by 6 = 120
Therefore the answer is 120 degrees.
Similar shapes
To find the scale factor of 2 shapes you need to do the length of
a side on one shape divided by the length of the corresponding
side on the other shape.
Plotting a reciprocal graph
Graphs of 'y' = 1/x, 2/x, 3/x
etc. are known as
reciprocal graphs and they
all have a similar shape