Question

x-y+1=0 and 2x+y-7=0 solve by Graphically method​

Answer 1

Step-by-step explanation:

Given,

Equations:-

x + 2y -7 = 0 ----------------(i)

&,

2x - y - 4 = 0 --------------(ii)

By seeing the equations we come to know that these are linear equations.

because they have power as 1 ;.(x ¹+ 2y¹ -7 = 0 )

Take eqn(i)

x + 2y -7 = 0

⇒ 2y = 7 - x

⇒ y = (7 - x)/2

To plot a line on graph we need atleast two points.

Substitute any random values for or y and get the points,

if x = 0 ; y = 7/2 = 3.5

point: A(0, 3.5)

if y = 0 ; x = 7

point: B(7, 0)

plot the points A(0, 3.5) & B(7, 0) on graph and join the points AB.

So a line is formed AB. that is the graph of the equation(i).

(2). Take eqn(ii)

2x - y - 4 = 0

⇒ y = 2x - 4

if y = 0; x = 2

Point: P(2, 0)

if x = 0; y = -4

point: Q(-4, 0)

Line PQ is formed by joining the points P and Q.

See the graph here in attachement.

Answer 2

Step-by-step explanation:

x-y+1=0 and 2x+y-7=0 solve by Graphically method

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