Graph the points A(1, –2) and B(–2, 1). Using a compass and straightedge, construct the line perpendicular to AB.

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,

3x + 4y -25 =0 represents the amount of change sianna should recieve