Question

Give the geometrical representation of 2y+7=0 as equations in 1 one variable 2 two variable

Answer 1

i)2y=-7
ii)0x+2y=-7,
whereby in a)The given equation is a one variable equation of the form ax+b=0 so its representation as=2y=-7 while in (b)To represent it in two variable equation of the form ax+by+c=0

Answer 2

Answer:

In one variable - $2y+7=0$ is a point.

In two variable - $2y+7=0$ is a line which is parallel to x-axis.        

Step-by-step explanation:

Given : Equation $2y+7=0$

To find : Give the geometrical representation of 2y+7=0 as equations in 1 one variable 2 two variable?

Solution :

In one variable,

$2y+7=0$ there is only y-axis no x-axis.

Solving equation,

$2y=-7$

$y=-\frac{7}{2}$

So, we can say that in one variable the equation is a point.

In two variable,

We can write the equation using x and y.

$0x+2y+7=0$

Now, put x=0

$0(0)+2y+7=0$

$2y=-7$

$y=-\frac{7}{2}$

Point $(0,-\frac{7}{2})$

Now, put x=1

$0(1)+2y+7=0$

$2y=-7$

$y=-\frac{7}{2}$

Point $(1,-\frac{7}{2})$

So, we can say that in two variable line is parallel to x-axis.