Consider the point (9,5) which lies on line / in the coordinate plane.
Could 9x+5y=0 represent line / ?
Yes or No?
well, check to see whether
9*9 + 5*5 = 0
doesn't look like it to me.
Could 9x+5y=0 represent line / ?
Yes or No?
9*9 + 5*5 = 0
doesn't look like it to me.