Draw the graph of the equation x + 2y – 3 = 0. From your graph, find the value of y when x = 5.

The given equation is,

x + 2y - 3 = 0

⇒ x = 3 - 2y

Putting y = 1, x = 3 - (2 × 1) = 1

Putting y = 0, x = 3 - (2 × 0) = 3

Thus, we have the following table:

Plot points (1,1) and (3,0) on a graph paper and join them to get the required graph.

Take a point Q on x-axis such that OQ = 5.

Draw QP parallel to y-axis meeting the line (x = 3 - 2y) at P.

Through P, draw PM parallel to x-axis cutting y-axis at M.

So, y = OM = -1.