Question

how many solutions of the equation 2x+1=x+3 are there on the 1.)number line 2.) Cartesian plane

Answer 1

exactly one point in number line and infinity points in cartesian plane since the above equation reduces to
$x = 2$
which is exact on no. line but it is 1.x +0y =2 in cartesian therefore it x-2=0 contains INFINITE values..hope this works