The equation $2 x+5 y=7$ has a unique solution, if $x, y$ are :

The graph of $x+y=0$ passes through origin and which quadrants ?

How many solution(s) of the equation $2 x+1=x-3$ are there on the :

$(i)$ Number line

$(ii)$ Cartesian plane

Any point on the line $y=x$ is of the form

Express the following linear equation in the form $a x+b y+c=0$ and indicate the values of $a, b$ and $c$ in each case

$x=\frac{2}{5} y+10$