Given a straignt line on a graph, how do you determine the equation for this line?

We know that a straight line is of the form y = mx + c – this means that what we need to find out is the 2 constants ‘m‘ and ‘c‘.

So how is this done?

Well! in a previous post, we looked at how to plot a linear equation on a graph using the slope and y-intercept method. In this article, we will be doing the reverse process; which is:

Finding the y-intercept – this will give us constant ‘c‘ in the equation, and

Finding the slope of the line – which will give us constant ‘m‘ in the equation.

Watch this video for an example.

Nouri Dib

How To determine if 2 linear equations are parallel or perpendicular to each other

Quadratic Curve - Coordinates of the Turning Point (Part II)

Given a straignt line on a graph, how do you determine the equation for this line?

We know that a straight line is of the form

y = mx + c– this means that what we need to find out is the 2 constants ‘m‘ and ‘c‘.So how is this done?

Well! in a previous post, we looked at how to plot a linear equation on a graph using the slope and y-intercept method. In this article, we will be doing the reverse process; which is:

y-intercept– this will give us constant ‘c‘ in the equation, andslopeof the line – which will give us constant ‘m‘ in the equation.Watch this video for an example.

## Nouri Dib