9/10 and -9/10 determine if parallel, perpendicular, or neither

On their way home from school. terri and evie started walking out for two blocks and then running for three blocks and then repeating that pattern. if they can walk a block in 2 minutes and run a block and 45 seconds how long will it take them to go 18 blocks?

Guests at an amusement park must be at least 54 inches tall to be able to ride the roller coaster. which graph represents the set of heights that satisfy this requirement?

Asystem of equations has 1 solution.if 4x-y=5 is one of the equations , which could be the other equation ?