Question

How do you graph `f(x)=-5x-1` by plotting points?

Answer 1

Evaluate the function for some arbitrary values of `x` (at least two, but three or more would be better to ensure no errors).
Plot the resulting coordinate pairs and draw a line through them.

Explanation:

Sample points

#{:(underline(color(black)(x)),color(white)("XXX"),underline(color(black)(f(x)))), (-2,,9),(0,,-1),(2,,-11) :}#