Question

How to graph 14x+18y=126

Answer 1

• We need to rearrange this into $y=my+c$
• Subtract 14x from both sides
• $18y=-14x+126$
• Divide both sides by 2
• $9y=-7x+63$
• Divide both sides by 9
• $y=\frac{-7x+63}{9}=\frac{-7x}{9} +\frac{63}{9}$
• Plot the point (0, 63/9)
• Then pick some x values and put them into the equation to find the respective y values
• Then plot those points
• Finally join up those points