Write a C language app

Slope Calculator (slope.c) The equation of a straight line is given by the following formula: y= mx +b, where m is the slope and b is the intercept. Write a program to compute the equation of a straight line given two points (x1, y1) and (x2, 42). The equation for the slope m of a line is: y2-41 m = 12-21 The intercept can be found by using one of the following formulas: b= y1 mx or b = y2 mx2. Your program will prompt the user for two points (21, y) and (x2; y2). Then compute the slope and the equation of the line; and determine whether the slope is positive or negative. If the two points are the same, print an error message