Linear equation given two points Calculator

Calculates the linear equation, distance and slope given two points.

 point P (x1 , y1 ) point Q (x2 , y2 ) [ angle unit degreeradian 6digit10digit14digit18digit22digit26digit30digit34digit38digit42digit46digit50digit linear equation y= x+ distance PQ slope θ
 When the equation becomes parallel to y-axis, it is displayed as infinity (∞). $\normal Linear\ equation\ through\ P\ and\ Q\\\vspace{5}\hspace{20} P(x_1,y_1),\ Q(x_2,y_2)\hspace{20}y=ax+b={\large\frac{y_2-y_1}{x_2-x_1}}x+{\large\frac{x_2y_1-x_1y_2}{x_2-x_1}}\\\vspace{5}\hspace{20}PQ=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\\\vspace{5}\hspace{20}\theta=tan^{\tiny-1}\left({\large\frac{y_2-y_1}{x_2-x_1}}\right)\\$

Linear equation given two points
 [1-10] /22 Disp-Num5103050100200
[1]  2019/02/25 16:06   Female / Under 20 years old / High-school/ University/ Grad student / Very /
Purpose of use
IXL online (bullshit) worksheet
(but i got a 100 on it cuz of this but my teacher is most likely suspicious now because i got a 100, and the fact that its 4;27 in the morning and i just submitted it, oh well whatever fml)
Comment/Request
-n/a
[2]  2019/02/24 05:11   Male / Under 20 years old / High-school/ University/ Grad student / Very /
Purpose of use
A slider to change deltaTime in my game on UI.
[3]  2018/11/30 19:43   Male / Under 20 years old / High-school/ University/ Grad student / Very /
Purpose of use
Programming interpolations.
[4]  2018/11/02 22:39   Male / 20 years old level / Self-employed people / Useful /
Purpose of use
making speed controller for steeper motor
[5]  2018/09/21 01:47   Female / Under 20 years old / Elementary school/ Junior high-school student / Not at All /
Purpose of use
Homework
Comment/Request
[6]  2018/09/19 07:32   Male / Under 20 years old / High-school/ University/ Grad student / A little /
Purpose of use
Assignment
Comment/Request
[7]  2018/09/19 03:02   Male / Under 20 years old / High-school/ University/ Grad student / A little /
Purpose of use
Homework
[8]  2018/08/30 15:12   Male / 30 years old level / An engineer / Useful /
Purpose of use
Linear approximation of a temperature coefficient curve.
[9]  2017/10/20 05:57   Male / - / High-school/ University/ Grad student / Very /
Purpose of use
mostly lazynes
[10]  2017/06/28 03:47   Male / 50 years old level / High-school/ University/ Grad student / Very /
Purpose of use
Heartrate to calorie per sec function creation python

Sending completion

To improve this 'Linear equation given two points Calculator', please fill in questionnaire.
Male or Female ?
Age

Occupation

Useful?

Purpose of use?