Answer:
-6
Explanation:
The equation 2x-12y=168 is in standard form so in order to dtermine the slope you need to convert it to slope-intercept form.
1. subtract 2x from both sides.
-12y=-2x+168
2. divide all terms by -12 (to isolate the y)
y=1/6x-14
3. the equation of a line that is the perpendicular is the opposite and reciprocal of the given slope.
the opposite of 1/6 is -1/6.
The reciprocal of -1/6 is -6/1 OR -6.
-6 is the slope of a line pependicular to 2x-12y=168.
Hope this helps.