Maths Chapters 13-18

To solve normal linear equations you use

EXAMPLE QUESTION:
SOLVE

8+5y=18

EXAMPLE QUESTION:
SOLVE

4(y-5)=24

What do you do when you have a question like this:

12/(p+2) = 3

What do you do when you have a question like this:

x+1/2 - 4x-1/3 = 5/12

What do you do if you are given a question like this:

p/5 + 3 = 7

When you need to set up a linear equation from a word problem, you have to

What is:
Formula
Expression
Equation
Identity

What do you do when you are asked to increase £200 by 40%?

What happens when you are asked to decrease £200 by 5%?

How do you work out Percentage Profit?

How do you work out Percentage Loss?

If you are asked to work out simple interest you

If you are asked to work out compound interest you

What is the general equation of a straight line?

EXAMPLE QUESTION:
Your given the equation y=2x+3, both y and x are unknown, work out what y and x are if x goes from 0 to 5.

If you are given the equation 2x+y=6 you have to

If you are given the equation 2x+3y=12 you

To find the mid-point of a line you

The gradient is

To work out the gradient you

If you are asked to find the y-intercept if you are given two or more coordinates and the gradient you

Any line that has an equation with the same gradient

If the equation of a line is y=3x, the perpendicukar line would be

If the ratio is in the same units

EXAMPLE QUESTION:
If you are given the ratio of green paint as B:Y - 2:5 and you know that they use 140ml of yellow paint. How much blue paint would they use?

Inverse Proportion is where

How do you describe a transformation?

How do you describe a reflection?

How do you describe a rotation?

How do you describe an enlargement?

The scale factor forn an enlargement is

Fractions or decimals as a scale factor make the enlargement

If the scale factor is a negative, you draw the enlargement

What is the difference between discrete and continuous data on histograms?

When there are unequal class intervals in a bar you

What ar the equations for
Frequency Density
Frequency
Class Width

A frequency polygon...

What happens when you draw a histogram/polygon for cumulative frequency?

How do you find the angles and the radius for Pie Charts?