It depends on the type of graph line you want to create. For example y=2 can be a horizontal line graph. You would plot the line on every point that is 2 units above the x-axis.

There are various types of equations for graph lines based on the type of graph you are going to create. You may have multiple variables to account for. The information provided here is for a linear graph line only.

As long as you have the two axis points you will be able to write an equation. The 'm' and 'b' will determine the slope and intercept of the line on the graph, since you know that 'y' and 'x' are the vertical and horizontal axis of the equation. If the slope is equal to 0, you may have a completely vertical or horizontal line depending on the rest of the equation.

- If you want a linear equation you could write y=0.009x + 34

- The slope can be found by doing 'rise over run'

There are various types of equations for graph lines based on the type of graph you are going to create. You may have multiple variables to account for. The information provided here is for a linear graph line only.

As long as you have the two axis points you will be able to write an equation. The 'm' and 'b' will determine the slope and intercept of the line on the graph, since you know that 'y' and 'x' are the vertical and horizontal axis of the equation. If the slope is equal to 0, you may have a completely vertical or horizontal line depending on the rest of the equation.