707 views

### What is a parametric equation?

A parametric equation is one that is defined in terms of a single parameter, usually called t.

This means that, instead of the standard geometric equation, where y and x are defined by each other, e.g. y=3x, they are defined by this other parameter, e.g. y=t, x=t/3, where t is the input.

Both of the examples given are the same, merely in a different format, it's important to understand how to rearrange a parametric equation into a geometric equation.

All you have to do is rearrange to find t on it's own, and then equate the two:

y=t,

x=t/3, 3x=t=y, y=3x.

2 years ago

Answered by James, an A Level Maths tutor with MyTutor

## Still stuck? Get one-to-one help from a personally interviewed subject specialist

#### 417 SUBJECT SPECIALISTS

£26 /hr

Degree: Mathematics (Masters) - York University

Subjects offered:Maths, Physics+ 1 more

Maths
Physics
Further Mathematics

“I study Maths at York University; I chose York because I loved the lecturers, they made maths fun and easy- that's what I hope to do with all my students!”

£36 /hr

Degree: Electronics Engineering (Doctorate) - Imperial College London University

Subjects offered:Maths

Maths

“I am an experienced and passionate tutor for Maths and Science (Physics in particular). Throughout my higher education, I have been wondering about how Mathematics acts as a tool to model and simplify the complicated concepts of the P...”

£20 /hr

Degree: General Engineering (Masters) - Durham University

Subjects offered:Maths, Physics+ 1 more

Maths
Physics
Further Mathematics

“Second year Engineering student, I'm passionate, dedicated and personable. A- Level Maths and Physics (A*AA).”

MyTutor guarantee

Currently unavailable: for regular students

Degree: Mathematics (Masters) - Exeter University

Subjects offered:Maths

Maths

“Third Year Mathematics Student and qualified TEFL Tutor, available any time to discuss tuition in either maths or english as a foreign language.”

### You may also like...

#### Posts by James

How do you differentiate X to the power of a?

How to prove that (from i=0 to n)Σi^2= (n/6)(n+1)(2n+1), by induction.

What is "Standard Form"?

What is a complex number?

#### Other A Level Maths questions

Integrate this funtion f'(x)=2x +4 with respect to x (C1 integration)

The line L has equation y = 5 - 2x. (a) Show that the point P (3, -1) lies on L. (b) Find an equation of the line perpendicular to L that passes through P.

Solve 4cos(2x )+ 2sin(2x) = 1 given -90° < x < 90°. Write 4cos(2x )+ 2sin(2x) in the form Rcos(2x - a), where R and a are constants.

[FP2] Solve: 3 cosh x - 4 sinh x = 7

We use cookies to improve your site experience. By continuing to use this website, we'll assume that you're OK with this.