Question

the graph of a linear equation in one or two variable is
parabola
a curve line
a straight line
a pair of parallel lines

Answer 1

Step-by-step explanation:

always a straight line....if it's not a straight line then ur answer is wrong,that's a way to check it...

hope my answer helps you

Answer 2

Answer:

Straight line

Step-by-step explanation:

The graph of a linear equation in one or two variable is straight line.

Taking example for clear this concept.

First for one variable.

2 x + 5 = 11. Find the value of x.

2 x = 11 - 5

2 x = 6

x = 3

See in grapgh there is straight line at ( 3 , 0 )

Now for two variable .

Suppose given 2 x + 3 y = 13 and x - y = - 1

2 x + 3 y = 13

2 x = 13 - 3 y ... ( i )

x - y = - 1

Multiply by 2 we get

2 x - 2 y = - 2

2 x = - 2 + 2 y

From ( i ) and ( ii ) we get

- 2 + 2 y = 13 - 3 y

3 y + 2 y = 13 + 2

5 y = 15

y = 3

putting y = 3 in ( ii )

2 x = - 2 + 2 y

2 x = -2 + 6

2 x = 4

x = 2

So we get x = 2 and y = 3

Now see second graph there is point of intersection at ( 2 , 3 ).