Get Answers to all your Questions

header-bg qa

Solve the following inequality graphically in two-dimensional plane:

    Q3.    3x + 4y \leq 12

Answers (1)

best_answer

3x + 4y \leq 12

Graphical representation of  3x + 4y = 12 is given in the graph below.

The line 3x + 4y = 12 divides plot into two half-planes.

Select a point (not on the line 3x + 4y = 12) which lie in one of the half-planes, to determine whether the point satisfies the inequality.

Let there be a  point (1,2)

We observe 

                1+2\leq 12    i.e. 3\leq 12  , which is true.

Therefore, the half plane I(above the line) is not a solution region of given inequality i.e. 3x + 4y \leq 12.

Also, the point on the line does satisfy the inequality.

Thus, the solution to this inequality is half plane II (below the line 3x + 4y = 12 ) including points on this line, represented by green colour.

This can be represented as follows: 

Posted by

seema garhwal

View full answer

Crack CUET with india's "Best Teachers"

  • HD Video Lectures
  • Unlimited Mock Tests
  • Faculty Support
cuet_ads