Top answers

y is proportional to x^2 and that when y = 75, x = 5. Find a formula for y in terms of x and find y when x=3

In a proportional equation, you represent the factor of proportionality as k. In this case it means that y=kx^2. In the question you're given a number for both y and x. Sub these in in order to solve for k. ...
KI
Answered by Kesem I. • Maths tutor
4911 Views

How to find the exact formula of the function if the graph of it is given?

To begin with, answering this question requires basic knowledge of simple Mathematical function and ability to solve simultaneous equations. One thing you need to be able to do is recognising what kind of fu...
JZ
Answered by Jokubas Z. • Maths tutor
3138 Views

Why is the area of a triangle 1/2 * b * h?

This question is more easily answered with the help of multiple diagrams, but:1) Draw a rectangle, and draw a line between the top left corner and the bottom right corner. This line divides the rectangle in ...
TD
Answered by Tutor5499 D. • Maths tutor
6133 Views

How do I factorise 12y-18

When we factorise we basically want to put an equation into brackets.Firstly we need to see what can be taken out of both parts of the equation.Both 12 and 18 divide by 6. 12/6= 2 and 18/6 = 3So we can take ...
RG
Answered by Remi G. • Maths tutor
11084 Views

Factorising and Expanding brackets

How to FACTORISE an equation: To avoid confusion; x = xx = multiplication​Take the example; 3x +18 In order to factorise we need to find a common factor for both '3x' and '18' and this number will be taken o...
JB
Answered by Josie B. • Maths tutor
7219 Views