Program to find slope of a line

Given two co-ordinates, find the slope of a straight line.

Examples:

Input  : x1 = 4, y1 = 2, 
         x2 = 2, y2 = 5 
Output : Slope is -1.5

Recommended: Please try your approach on {IDE} first, before moving on to the solution.

Approach: To calculate the slope of a line you need only two points from that line, (x1, y1) and (x2, y2). The equation used to calculate the slope from two points is:

Below is the implementation of the above approach:

c++

// C program for slope of line 
#include <bits/stdc++.h> 
using namespace std; 
  
// function to find the slope of a straight line 
float slope(float x1, float y1, float x2, float y2) 
{ 
    return (y2 - y1) / (x2 - x1); 
} 
  
// driver code to check the above function 
int main() 
{ 
    float x1 = 4, y1 = 2; 
    float x2 = 2, y2 = 5; 
    cout << "Slope is: " 
         << slope(x1, y1, x2, y2); 
    return 0; 
} 

/div>

Java

// Java program for slope of line 
import java.io.*; 
  
class GFG { 
    static float slope(float x1, float y1, 
                       float x2, float y2) 
    { 
        return (y2 - y1) / (x2 - x1); 
    } 
    public static void main(String[] args) 
    { 
        float x1 = 4, y1 = 2; 
        float x2 = 2, y2 = 5; 
        System.out.println("Slope is " +  
                    slope(x1, y1, x2, y2)); 
    } 
} 

Python

# Python program for slope of line 
def slope(x1, y1, x2, y2): 
    return (float)(y2-y1)/(x2-x1)  
  
# driver code     
x1 = 4
y1 = 2 
x2 = 2 
y2 = 5 
print "Slope is :", slope(x1, y1, x2, y2) 

C#

// C# program for slope of line 
using System; 
  
class GFG  
{ 
    static float slope(float x1, float y1, 
                       float x2, float y2) 
    { 
        return (y2 - y1) / (x2 - x1); 
    } 
      
    // Driver code 
    public static void Main() 
    { 
        float x1 = 4, y1 = 2; 
        float x2 = 2, y2 = 5; 
        Console.WriteLine("Slope is " +  
                    slope(x1, y1, x2, y2)); 
    } 
} 
  
// This code is contributed by vt_m. 

PHP

<?php 
// PHP program for  
// slope of line 
  
// function to find the  
// slope of a straight line 
function slope($x1, $y1, $x2, $y2) 
{ 
    return ($y2 - $y1) /  
           ($x2 - $x1); 
} 
  
    // Driver Code 
    $x1 = 4;  
    $y1 = 2; 
    $x2 = 2;  
    $y2 = 5; 
    echo "Slope is: "
         , slope($x1, $y1,  
                 $x2, $y2); 
  
// This code is contributed by anuj_67. 
?> 

Output:

Slope is: -1.5

Recommended: Please try your approach on {IDE} first, before moving on to the solution.

c++

Java

Python

C#

PHP

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