Question

draw the graph of the equation x+2y-3=0 . from your graph find the value of y when x = 5 .

Answer 1

x + 2y -3= 0
x = 5 
y = ?
x + 2y =3 
5 + 2y -3 = 0
2 + 2y = 0 
2y = -2
 y = -2 /2 
y = -1 

IN GRAPH y = -1 & x = 5 

Answer 2

Given:

$x+2y-3=0$

To find:

Value of y when x=5

Solution:

The given equation can be written as

$x+2y=3$

Substitute x=0

$2y=3$

$x=\frac{3}{2}=1.5$

The graph cuts the y-axis at point (0,1.5).

Substitute y=0

$x=3$

The graph cuts the x- axis at point (3,0).

Now, draw a line which cuts the x- axis at point (3,0) and y-axis at point (0,1.5).

Substitute x=5

$5+2y=3$

$2y=3-5=-2$

$y=\frac{-2}{2}=-1$

From graph we can see that when x=5 then

y=-1