How do we draw the graph of a straight line from an equation?

• Before you start trying to draw a straight line, make sure you understand how to find the equation of a straight line – that will help you understand this
• How we draw a straight line depends on what form the equation is given in
• There are two main forms you might see:y = mx + c?and?ax + by = c
• Different ways of drawing the graph of a straight line:

1. From the form?y = mx + c 

   (you might be able to rearrange to this form easily)plot?c?on the?y-axis

   go 1 across,?m?up (and repeat until you can draw the line)

2. From?ax + by = c 

   put?x = 0?to find?y-axis interceptput?y = 0?to find?x-axis intercept

   (You may prefer to rearrange to?y = mx + c?and use above method)