Find the point P and Q, find the distance d(P, Q). P(-5,-1), Q(7,-4)

Two cyclists 84 miles apart start riding toward each other at the same. one cycles 2 times as fast as the other. if they meet 4 hours later, what is the speed (in mi/h) of the faster cyclist?

Which of the following is a function? a.) {(-2, -4/5), (-1,-,,-1)} b.) {(-2,,1/,3/,1)} c.) {(-22)} d.) {(-21)}

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