What materials do you need to draw realistics drawings. Please help. Will mark brainliest and no links

Hello!

So technically the only necessary  materials for realistic drawings is paper (preferably sketch paper), charcoal pencils, and erasers.

But if you want to be a little bit more specific, you should get some Q-Tips because it makes the charcoal blend better.

If you want some more detail into the types of paper, erasers, and pencils just use this link! Its great for quality art feedback.

https://thevirtualinstructor.com/blog/10-essential-drawing-materials-and-tools-for-beginners

Let me know if you need anymore help!

Ary~~

coordinates of r(b,c)

slope of nm is 0.

step-by-step explanation:

the midpoint of the line joining the points (x₁,y₁) and (x₂,y₂) is given by

the midpoint of the line segment nk is given by

∴r(b,c)

the slope of the line joining the points (x₁,y₁) and (x₂,y₂) is given by

slope of rs is

hence

coordinates of r(b,c)

and slope of nm is 0.