Is the graph of y=3/2x-4 paralel to the graph of y=-3/2x-4

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

In the diagram below, abc is congruent to dec what is the value of x

Ben and cam are scuba diving. ben is 15.815.8 meters below the surface of the water. cam is 4.24.2 meters above ben. what is cam's position relative to the surface of the water? choose 1 choose 1 (choice a) a 11.611.6 meters above the surface of the water (choice b) b 11.611.6 meters below the surface of the water (choice c) c 2020 meters above the surface of the water (choice d) d 20 meters below the surface of the water