Question

2x – y + 1 = 0 is a linear equation in two vanables in general form.

Let us draw the graph of this equation.​

Answer 1

Answer:

= 2x-y-1=0

= 2x=y+1

= x=y+1

       2

this table for 2x-y-1=0 is

X              2                1              0

Y              3                1              -1

Also we have

= 2x+y=9

= 2x+9-y

= x= 9-y

        2

The table for 2x + y = 9 is

X            4            3             5

Y             1            3             -1

plotting the above we get the following required graph

from the above graph it is clear that the two lines 2x-y-1=0 and 2x+y=9

intersect at the point (2,5,4)