If an object moves along a straight line, **the distance travelled can be represented** by a distance-time graph. In a distance-time graph, the gradient of the line is equal to the speed of the object. The greater the gradient (and the steeper the line) the faster the object is moving.

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## What does a straight line in a graph signify?

Straight line graph signifies that **the changes in the values of the quantities represented on the graph are proportional to each other**, e.g., in simple pendulum, the straight line graph means l is proportional to T^{2}, or l/T^{2} is constant. Slope of the straight line gives the value of the constant of proportionality.

## What does a horizontal line mean on a distance time graph?

A horizontal line on a distance-time graph shows **that the object is stationary (not moving because the distance does not change)** A sloping line on a distance-time graph shows that the object is moving. In a distance-time graph, the slope or gradient of the line is equal to the speed of the object.

## What does the horizontal line on a graph mean?

In more simple terms, a horizontal line on any chart is **where the y-axis values are equal**. If it has been drawn to show a series of highs in the data, a data point moving above the horizontal line would indicate a rise in the y-axis value over recent values in the data sample.

## Why does a horizontal line indicate an object has stopped on a distance and time graph?

Velocity tells the speed and direction of a moving object. Acceleration tells us the rate speed or direction changes. … If an **object is not moving**, a horizontal line is shown on a distance-time graph. Distance Time is increasing to the right, but its distance does not change.

## What is a straight horizontal line on a graph called?

Glossary and Terms: Graphs and Lines. Abscissa – The horizontal line, or **x-axis**, of a graph.

## What is a straight line called?

A line is sometimes called a straight line or, more archaically, **a right line** (Casey 1893), to emphasize that it has no “wiggles” anywhere along its length. … Two lines lying in the same plane that do not intersect one another are said to be parallel lines.

## What straight line indicates?

straight line indicate that **the motion is uniform or object is at rest**.

## Is a horizontal line positive or negative?

The slope of **a line can be positive, negative, zero, or undefined**. A horizontal line has slope zero since it does not rise vertically (i.e. y_{1} − y_{2} = 0), while a vertical line has undefined slope since it does not run horizontally (i.e. x_{1} − x_{2} = 0). because division by zero is an undefined operation.

## What is an example of a horizontal line?

Examples. Look at a wall, and look down to where that wall meets the floor. That **intersection** is a horizontal line. Other examples of horizontal lines we may see every day are the following: the line separating the sky from the land across a clear plain or the line separating the sky from the water at the beach.

## What is the rule for a horizontal line?

A horizontal line is one **the goes left-to-right, parallel to the x-axis of the coordinate plane**. All points on the line will have the same y-coordinate. In the figure above, drag either point and note that the line is horizontal when they both have the same y-coordinate. A horizontal line has a slope of zero.

## What does a horizontal line mean?

A horizontal line is **a straight line that is drawn from left to right or right to left and it is parallel to the x-axis in the coordinate plane**. In other words, a straight line that has an intercept only on the y-axis, not on the x-axis is called a horizontal line.

## What is the difference between a curved line and a straight line on a distance time graph?

‘Straight lines’ on a distance-time graph tell us that the object is travelling at a constant speed. Note that you can think of a stationary object (not moving) as travelling at a constant speed of 0 m/s. … ‘Curved lines’ on a distance time graph **indicate that the speed is changing**.

## Which of the following indicates the horizontal line on a distance time graph of the object?

Explanation: A straight horizontal line on a speed-time graph means **that speed is constant**. It is not changing over time. A straight line does not mean that the object is not moving!

## Is the horizontal line on a graph called?

Thus the horizontal lines in the graph are called **the x –axis**.

## What is the horizontal line at 0 called?

Know why it’s called **the horizon**? It’s a horizontal line! And just like the horizon, horizontal lines go straight left and right.