Solve for X

show me what steps to do for this one​

What is the slope of a line that is perpendicular to y = 3x + 1

Of the ones listed here, the factor that had the greatest impact on the eventual destruction of native americans' ways of life was the development of the a) automobile. b) highway. c) railroad. d) steamboat.

In the equation sqrt(n+5)-sqrt(11-10)=1. what is the value of n