PLZ Help me. This is difficult.

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

Determine the domain and range of the given function. the domain is all real numbers all real numbers greater than or equal to –2{x: x = –2, –1, 0, 1, 2}{y: y = –2, –1, 0, 1, 2}. the range is all real numbers all real numbers greater than or equal to –2{x: x = –2, –1, 0, 1, 2}{y: y = –2, –1, 0, 1, 2}.

Which is an x-intercept of the graphed function? (0, 4) (–1, 0) (4, 0) (0, –1)