Arectangular prism had a volume of 540 cubic centimeters. the height of this prism was changed from 10 centimeters to 5 centimeters to create a new rectangular prism. the other dimensions stayed the same. which is the volume of this new prism?

The volume of the new rectangular prism would be 270 cubic centimeters.  The reason for this is that when only one dimension is changed, the overall volume is only changed by that same relationship.  Because only the height was cut in half, this would be only one of the dimensions.  

Abit confused about what you mean, but i think you might be referring to slope intercept form: y = mx + bin that case b, or the y intercept is already given.(0,-1)find the slope by using the formulay2 - y1/x2 - x1the final slope will be 4/2, equivalent to 2.now your equation should look like thisy = 4/2x -1sorry if this didn’t you out!

The answer would be 27 because assuming that each package has 1 bar of soap and 1 tube of toothpaste, after 27 packages they would run out of toothpaste