Line them up!
Things You'll Need
- Graph Papers
Draw a pair of perpendicular lines. These are your axes (the plural of "axis"). Label the horizontal axis "x" and the vertical axis "y." Label several different values, both positive and negative, of x and y on both axes. This is the scale of the graph.
Remember that your equation should be in the form y = mx + b (if it is in a different form, solve for y in terms of x).
Draw a dot on the y axis at y = b. This is the y-intercept of the graph (the point at which the graph crosses the y-axis).
Choose a value for x other than 0 and mark this on the x-axis you've drawn. Lightly draw a vertical line that crosses this value of x on your x-axis.
Plug the x value you chose into your equation.
Solve for y. Lightly draw a horizontal line that crosses this value of y on your y-axis.
Make a dot where the two lines you just drew intersect.
Draw a straight line between this dot and the y-intercept. Extend this line in both directions to the edges of your graph. This line is the graph of your equation.
Tips & Warnings
- The value "m" in y = mx + b is the slope of the graph. The slope is the ratio of vertical change to horizontal change between two points on the graph.
- Example: The graph of the equation y = 2x + 5 has a slope of 2 and crosses the y-axis at y = 5.
How to Graph Linear Equations
Graph linear equations by using co-ordinates to map points on a graph with an X and Y axis. Learn to graph linear...
How to Make a Graph in MS Excel
Microsoft Excel 2010 is well known for its spreadsheet capabilities and contains numerous built-in formulas to help you calculate everything from simple...
How to Graph an Equation
Making graphs of equations seems like a very difficult task, especially when you are dealing with algebra for the first time. However,...
How to Convert Graphs to Equations
A straight graph visually depicts a mathematical function. The x- and y-coordinates of the graph's points represent two sets of quantities and...
How to Find the Intercepts of the Graph of the Equation
In your algebra class, you will learn to graph linear equations on an x-y coordinate graph system. Because the coordinate points are...