# CBSE Class 10-Mathematics: Chapter – 3 Pair of Linear Equation in Two Variables Part 11 (For CBSE, ICSE, IAS, NET, NRA 2022)

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**Question 16**:

ABCD is a rectangle, find the values of x and y.

**Answer**:

On adding (i) and (ii) ,

**Question 17**:

Given the linear equation , write another linear equation in two variable such that the geometrical representation of the pair so formed is

(a) Intersecting lines

(b) Parallel lines

(c) Overlapping

**Answer**:

another linear equation representing.

(a) Intersecting lines is

(b) Parallel lines

(c) Overlapping

**Question 18**:

Find the value of for which the system of equation has infinitely many solutions

i.e..

if

Or if

Or if

If

**Question 19**:

Find the relation between a, b, c and d for which the equations and have a unique solution.

**Answer**:

Or

**Question 20**:

Solve for and :

**Answer**: