What is the equation of the line perpendicular to the line x = 6 that passes through the point (4,7)?

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

Atriangle has a side lengths of 18cm, 80 cm and 81cm. classify it as acute obtuse or right?

Apool measures 100 meters by 100 meters a toddler inside the pool and trows a ball 60 centimeters from one edge of the pool. how far is the ball from the opposite edge of the pool