Question

the graphs of the equations 7x+21y=14 and 3x+9y=6 are coincident lines​

Answer 1

the points are

7x+21y=14

then points are

(x,y)=(o,1.5)

and (x,y)=(2,0)

then points of 3x+9y=6

then points are

x,y=0,1.5 and 2,0

this four point should be drawn in graph

We will get coincident line

which have infinite numbers of solutions

and this equations are consistent equations