#### Curve equation

## How do you find the normal equation of a curve?

Remember, if two lines are perpendicular, the product of their gradients is -1. So if the gradient of the tangent at the point (2, 8) of the curve y = x^{3} is 12, the gradient of the normal is -1/12, since -1/12 × 12 = -1 . hence the equation of the normal at (2,8) is 12y + x = 98 .

## How do you find the equation of a curved line on a graph?

We can, of course, use this to find the equation of the line. Since the line crosses the y-axis when y = 3, the equation of this graph is y = ½x + 3 . To find the gradient of a curve, you must draw an accurate sketch of the curve. At the point where you need to know the gradient, draw a tangent to the curve.

## What is a curved line called?

In mathematics, a curve (also called a curved line in older texts) is an object similar to a line, but that does not have to be straight. Level curves and algebraic curves are sometimes called implicit curves, since they are generally defined by implicit equations.

## What is the normal line to a curve?

The normal line to a curve at a particular point is the line through that point and perpendicular to the tangent.

## What is tangent equation?

Recall : • A Tangent Line is a line which locally touches a curve at one and only one point. • The slope-intercept formula for a line is y = mx + b, where m is the slope of the line and b is the y-intercept. • The point-slope formula for a line is y – y1 = m (x – x1).

## Is a curved line a function?

A function can only have one output, y, for each unique input, x. If a vertical line intersects a curve on an xy-plane more than once then for one value of x the curve has more than one value of y, and so, the curve does not represent a function.

## How do you define a curve?

Curve, In mathematics, an abstract term used to describe the path of a continuously moving point (see continuity). Such a path is usually generated by an equation. The word can also apply to a straight line or to a series of line segments linked end to end.

## What is a curved shape?

1. curved shape – the trace of a point whose direction of motion changes. curve. bell-shaped curve, Gaussian curve, Gaussian shape, normal curve – a symmetrical curve representing the normal distribution.

## What are the different types of curve?

Types of CurvesSimple Curve. As we know, a curve is a line that is not straight. Closed Curve. A curve in which the starting point and ending point match is known as a closed curve. Simple Closed Curve. Algebraic and Transcendental Curve. Algebraic Curve. Transcendental Curve.

## Is circle a curve?

A circle is a shape consisting of all points in a plane that are a given distance from a given point, the centre; equivalently it is the curve traced out by a point that moves in a plane so that its distance from a given point is constant.

## How do you write an equation for a normal line?

The normal line is defined as the line that is perpendicular to the tangent line at the point of tangency. Because the slopes of perpendicular lines (neither of which is vertical) are negative reciprocals of one another, the slope of the normal line to the graph of f(x) is −1/ f′(x).