Question

Input in standard form the equation of the given line.

The line with m = -3/8 and passing through (5, -4)

Answer 1

Standard equation of a line passing through point (x1, y1) and slope m
\[\frac{y-y1}{x-x1}=m\]
Just plugin the values and you'll get the standard form

Answer 2

See http://en.wikipedia.org/wiki/Linear_equation#General_.28or_standard.29_form

Ax + By = C
is "standard form"