What is the equation of the line that is perpendicular to the line y = 1/3x + 7 and passes through the point (1, 5)?

Answer 1

perpendicular line has negative inverse slope = -3

through (1,5) is

y -5 = -3(x-1) in point slope form

or

y = -3x +8 in slope intercept form

or

3x+y = 8 in standard form