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How do I draw a straight line graph given a y=mx+c equation by the table method?

The y=mx+c equation is for a straight line (also known as 'linear') graph. The ' y' is representative of the y-value, 'm' represents the gradient (how steep the graph is) and 'c' represents the y-intercept (...
NC
Answered by Neha C. • Maths tutor
15231 Views

How do I solve a quadratic equation by completing the square?

The first step is to make sure that the coefficient of x^2 is 1 by dividing all terms by a (where a equals the coefficient of x^2). Then we must write the quadratic equation as a square plus another term. To...
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Answered by Gina J. • Maths tutor
4900 Views

How to factorise simple quadratic equations?

The reason why we factorise quadratic equation is because it is a neater and simpler way of writing the expression. Example 1 If we wanted to factorise x^2 + 10 + 21 we must look at factors of 21 that add up...
KV
Answered by Karan V. • Maths tutor
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What is the difference between a histogram and a bar chart? How can I find the frequency density?

In a bar chart, the vertical axis represents the frequency. On the other hand, in a histogram, it is the area which represents the frequency. Therefore, the label of the vertical axis on a histogram should b...
MC
Answered by Michelle C. • Maths tutor
9716 Views

How do I factorise a quadratic equation?

A quadratic equation is one with a squared term, like 3x 2 + 9x. If you're asked to factorise an equation like this, you need to find the highest common factor . This means that you need to find the highest ...
EA
Answered by Eden A. • Maths tutor
4879 Views