An alloy is two-thirds copper and one-third zinc. How many pounds of each metal are in a casting that weighs 40 pounds?

Need solving this second acceleration problem.

When y’all answer can y’all explain too !

Identify the slope an intercept of the following linear equation y = 1/5x - 6 a. slope: 1/5; intercept: -6 b. slope: 5; intercept: -6 c. slope: -1/5; intercept: 6 d. slope: 1/5; intercept: 6