Line Point Distance Multiple Choice Questions and Answers (MCQs)

This set of Data Structures & Algorithms Multiple Choice Questions & Answers (MCQs) focuses on “Line Point Distance”.

1. The shortest distance between a line and a point is achieved when?
a) a line is drawn at 90 degrees to the given line from the given point
b) a line is drawn at 180 degrees to the given line from the given point
c) a line is drawn at 60 degrees to the given line from the given point
d) a line is drawn at 270 degrees to the given line from the given point
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2. What is the shortest distance between the line given by ax + by + c = 0 and the point (x1,y1)?
a)
b)
c)
d) ax1+by1+c
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3. What is the shortest distance between the line given by -2x + 3y + 4 = 0 and the point (5,6)?
a) 4.5 units
b) 5.4 units
c) 4.3 units
d) 3.3 units
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4. What is the general formula for finding the shortest distance between two parallel lines given by ax+by+c1=0 and ax+by+c2=0?
a)
b)
c)
d) c1+c2
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5. What is the distance between the lines 3x-4y+7=0 and 3x-4y+5=0?
a) 1 unit
b) 0.5 unit
c) 0.8 unit
d) 0.4 unit
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6. What will be the slope of the line given by ax + by + c = 0?
a) -a/b
b) -b/a
c) -c/a
d) a/c
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7. What will be the slope of the line given by 10x + 5y + 8=0?
a) -5
b) -2
c) -1.25
d) 5
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8. What will be the co-ordinates of foot of perpendicular line drawn from the point (-1,3) to the line 3x-4y-16=0?
a) (1/5,2/5)
b) (2/25,5/25)
c) (68/25,-49/25)
d) (-49/25,68/25)
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9. Which of the following is used to find the absolute value of the argument in C++?
a) abs()
b) fabs()
c) mod()
d) ab()
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10. What will be the slope of the line perpendicular to the line 6x-3y-16=0?
a) 1/2
b) -1/2
c) 2
d) -2
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11. Find the output of the following code.

#include<math.h> 
#include<iostream>
using namespace std;
void distance(float x, float y, float a, float b, float c) 
{ 
	float d = fabs((a * x + b * y + c)) / (sqrt(a * a + b * b)); 
	cout<<d;
	return; 
} 
int main() 
{ 
	float x = -2; 
	float y = -3; 
	float a = 5; 
	float b = -2; 
	float c = - 4; 
	distance(x, y, a, b, c); 
	return 0; 
}

a) 2.8
b) 1.8
c) 1.4
d) 2.4
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Sanfoundry Global Education & Learning Series – Data Structures & Algorithms.

To practice all areas of Data Structures & Algorithms, here is complete set of 1000+ Multiple Choice Questions and Answers.