Find the exact volume of a waffle ice cream cone with a 9 in diameter and a height of 17 inches

Me because some of question i don’t understand

Which value of m will create a system of parallel lines with no solution? y= mx - 6 8x - 4y = 12

Write an equation of the line that passes through the point (2, 3) and is perpendicular to the line x = -1. a) y = 1 b) y = 3 c) y = 0 eliminate d) y = -3