Question 721473
ALTITUDE

You know the co ordinates of vertices of the triangle.

Suppose BC is the base and AD is the altitude

Find the slope of BC. {{{(y2-y1)/(x2-x1)}}}

The slope of AD will be negative reciprocal of BC.

You know the slope of the altitude and the vertex A

so frame the equation using formula
(y-y1) = m(x-x1)

MEDIAN

By mid point formula find the co ordinates of point where the median touches the base BC.

Again you know the co ordinates of one vertex and the the median point on BC.

frame an equation using two point formula