# NCERT Class 11-Math's: Exemplar Chapter –10 Straight Lines Part 11

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**Question 36:**

For specifying a straight line, how many geometrical parameters should be known?

(A)

(B)

(C)

(D)

**Answer: (B)**

**Question 37:**

The point undergoes the following two successive transformations:

(i) Reflection about the line

(ii) Translation through a distance units along the positive axis

Then the final coordinates of the point are

(A)

(B)

(C)

(D)

**Answer: (B)**

**Question 38:**

A point equidistant from the lines and is

(A)

(B)

(C)

(D)

**Answer: (C)**

**Question 39:**

A line passes through and is perpendicular to the line . It’s intercept is

(A)

(B)

(C)

(D)

**Answer: (D)**

**Question 40:**

The ratio in which the line divides the distance between the lines and is

(A)

(B)

(C)

(D)

**Answer: (B)**

**Question 41:**

One vertex of the equilateral triangle with centroid at the origin and one side as is

(A)

(B)

(C)

(D)

[**Hint**: Let ABC be the equilateral triangle with vertex and let be the point on BC. Then . Also and

**Answer: (B)**

## Fill in the Blank in Exercises 42 to 47

**Question 42:**

If are in A.P., then the straight lines will always pass through ____.

**Answer:**

**Question 43:**

The line which cuts off equal intercept from the axes and pass through the point is ____.

**Answer:**

**Question 44:**

Equations of the lines through the point and making an angle of with the line are ____.

**Answer:**

**Question 45:**

The points and are situated on the ____ of the line .

**Answer:**

Opposite sides