Solve: -x + 4 = -9 and -3x + 7 = 1

Without graphing the linear functions, find the coordinates of the point of intersection of their graphs: y=3x−11 and y=4

50 ! pls ! 12.  building codes regulate the steepness of stairs. homes must have steps that are at least 13 inches wide for each 8 inches that they rise.

a. discuss how to find the slope of the stairs.
b. describe how changing the width or height affects the steepness of the stairs.

Anyone know? is appreciated! will mark brainliest if correct!