# How to ... Flashcards

1
Q

What are the 5 steps to solving proportion problems?

A
2
Q

How would you write the following as a proportional expression?

A

Proportional expression means to use the ‘fishy’ symbol

3
Q

How would you write a proportional equation for this question?

A

Equations have equal signs in them, so we replace the proportional symbol with ‘=k’

4
Q

How would you plot a quadratic graph?

A

Make and complete a table of values by substituting x into the equation.

(most of the time you are given a table, but you may need to make your own)

5
Q

How would you form a proportional expression for this question?

A

Proportional expressions use the fishy symbol, also make sure you read the questions for extras like a cube of x

6
Q

How would you find k for this question?

A

Substitute a=7 and b=28 into the equation and solve for k

7
Q

How would you form the proportional expression for the question?

A

Proportional expressions use the fishy symbol, also make sure you read the questions for extras like a square root of g

8
Q

How would you form the proportional equation for the question?

A

Equations have equal signs in them, so we replace the proportional symbol with ‘=k’

9
Q

How would you plot a cubic graph?

A

Make and complete a table of values by substituting x into the equation.

(most of the time you are given a table, but you may need to make your own)

10
Q

How would you plot a reciprocal graph?

A

Make and complete a table of values by substituting x into the equation.

(most of the time you are given a table, but you may need to make your own)

11
Q

How would you find the gradient of the line at 3 seconds?

A

Draw a tangent to the curve at 3 seconds and find the gradient of the line.

12
Q

How would you find the area under the graph between 0 and 3 seconds?

A

Use the trapezium rule:

1. split the x axis into equal strips (between 3 and 8)
2. Form each into trapeziums
3. Find the area of each trapezium and add them all together
4. *Under or over estimate?
13
Q

What does the gradient represent for the speed time graph?

A

Acceleration

14
Q

What does the area under the graph represent?

A

Distance travelled

15
Q

How would plot an exponential graph?

A

Make and complete a table of values by substituting x into the equation.

(most of the time you are given a table, but you may need to make your own)