Question

in graphs how do we know that we have to put certain values in equation and variable x and y like 3x-2y-1=0 we have taken x as 2 then 4 and then 6 so do explain me.

Answer 1

Answer:

Step-by-step explanation:

No worries

let's take $3x-2y-1=0$

here, we will take only x value as 0 (a smaller number will help you to do the calcualtion fast and even if it is required to be presented graph it will have fewer values)

if x=0 then,

3(0)- 2y-1 = 0

0-2y-1 =0

-2y=1

y=1/2

therefore,(0,1/2) is the solution for the given equation 3x-2y- 1 = 0  

So to answer your question...there is no certain value for x as there are infintely many solution for linear equation with 2 variables {General form - ax+by+c=0}

Hope you've got it :)