Two edges of a stop sign meet at a corner of the sign. what geometric idea can the two edges and the corner represent

If given an equation of a line such as -1/2x+6 how would you create an equation of a line parallel and perpendicula to this line that goes through another point such as (4,10)

Acar travels at an average speed of 52 miles per hour. how long does it take to travel 299 miles

Which ordered pair is a solution to the system of linear equations? 2x + 3y= 6 –3x + 5y = 10