HELPP PLS I NEED IT DONE HURRY

Tyler enjoys the fish so much that after his birthday his family decides to take him to a famous aquarium a tank at the aquarium is similar to his tank with the scale factor of 8 how many times greater is the volume of the tank at the aquarium than the volume of tyler tank

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

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