A straight line is often the best approximation of a set of data points that result from a real situation. If the equation is known, it can be used to predict the value of one variable, given a value of the other. For this reason, the equation is written as a linear relation in slope-intercept form.

## What is the difference between the linear equation and the equation of a line?

Linear means something related to a line. All the linear equations are used to construct a line. A non-linear equation is such which does not form a straight line. It looks like a curve in a graph and has a variable slope value.

## What is the difference between linear and straight line?

As adjectives the difference between straight and linear is that straight is not crooked or bent; having a constant direction throughout its length while linear is having the form of a line; straight.

## How do you know if there is a linear relationship?

There are only three criteria an equation must meet to qualify as a linear relationship: It can have up to two variables. The variables must be to the first power and not in the denominator. It must graph to a straight line.

## How do I describe a graph?

A line graph plots data in a single line over time. To describe the graph, follow it’s progress along the horizontal access and describe whether it goes down, up, or stays the same.

## What symbol is used in a linear equation?

Step-by-step explanation: Linear equations are patterns of numbers that either increase or decrease by the same amount each step of the way. They can be represented in slope-intercept form, y = mx + b, where m is the slope and b is the y-intercept.

## How do you graph and equation?

To graph a linear equation, we can use the slope and y-intercept.

1. Locate the y-intercept on the graph and plot the point.
2. From this point, use the slope to find a second point and plot it.
3. Draw the line that connects the two points.