Solution of linear equation in 2 variables

Q.

Is -2 a solution of the linear equations $4x-2=8$ and $2x=-4$ ?

1. x= -2 doesn't satisfy either of the equations

2. -2 satisfies only 2x = -4

3. -2 satisfies both 4x-2=8 and 2x = -4.

4. -2 satisfies only 4x-2=8

Q.

Any solution of the linear equation$2x+0y+9=0$ in two variables is of the form:

1. $\left(-\frac{9}{2},m\right)$

2. $\left(n,-\frac{9}{2}\right)$

3. $\left(0,-\frac{9}{2}\right)$

4. $\left(-9,0\right)$

Q. is a solution of the equation $y=6x+2.$

1. $(1,8)$
2. $(0,1)$
3. $(2,0)$
4. $(-1,2)$

Q. Q: Which of the following point does not lie on the line y = 3x + 4? 1) (-1, 1) 2) (4, 12) 3) (1, 7) 4) (2, 10)

Q. For all values of c the pair of linear equations x-2y=8 and 5x-10y=c have a unique solution. justify whether this statement is true or false?