Which of the following equations is equivalent to 1/4x -1/2 y = 8? a .2x - 4y = 8 b. 2x - 4y = 64 c. 4x - 2y = 64

Can someone explain the elimination method to me for this problem?

What is the distance between the points (2 -3) and (-6 4) on the coordinate plane

The average number of vehicles waiting in line to enter a parking lot can be modeled by the function f left parenthesis x right x squared over 2 left parenthesis 1 minus x right parenthesis endfraction , where x is a number between 0 and 1 known as the traffic intensity. find the rate of change of the number of vehicles waiting with respect to the traffic intensity for the intensities (a) xequals0.3 and (b) xequals0.6.