Expert: Richard J. Raridon - 9/21/2010

Question
hi there im 13 and in 8th grade taking the freshmen course of algebra 1...in my math homework on graphing linear equations in one variable it asks to decide whether the point lies on line for (-3,4) when x=-3...what line are thy talking about? can you help me slove it? thank you!!

Answer
Linear equations are straight lines.  You can't have a linear equation with only one variable unless it's a vertical line like x=1 or a horizontal line like y=3.  x=-3 is a vertical line and so, of course, the point (-3,4) lies on it, as do (-3,0), (-3,1), etc.