The equation of the perpendicular is 
Further explanation:
The linear equation with slope m and intercept
is given as follows.

The formula for slope of line with points
and
can be expressed as,

Given:
The equation of the line is
and passes through the point is 
Explanation:
The product of the slope of perpendicular line and the slope of line is 

Solve the equation 

The slope of the line is 
The slope of perpendicular line can be obtained as follows,

The passes through the point is 
Substitute
for
for
and
for m in equation y = mx + c.

The equation of the perpendicular is 
Learn more:
1. Learn more about inverse of the functionhttps://brainly.com/question/1632445.
2. Learn more about equation of circle brainly.com/question/1506955.
3. Learn more about range and domain of the function brainly.com/question/3412497
Answer details:
Grade: High School
Subject: Mathematics
Chapter: Linear equation
Keywords: equation of a line, perpendicular, -x+3y=9, passes through point, (-3,2) numbers, slope, slope intercept, inequality, equation, linear inequality, shaded region, y-intercept, graph, representation, origin.