What is the slope of the line given by the equation y = -5x? enter your answer as an integer or fraction in lowest terms. btw can you tell me how you got the answer for future reference

Solve the system of equations. y= 2x y= x^2 - 15

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?