The line 
is already written in the 
form. This means that 
is the slope. If two lines are perpendicular, their slopes are the anti-inverse of each other, i.e. their product is -1.
So, our perpendicular line has a slope of 
Finally, we want a line passing through (1,1) with slope :
If you would like to know how many tortes are left, you can calculate this using the following steps:
five chocolate tortes - 2 5/16 tortes = 5 - 2 5/16 = 5 - 37/16 = 80/16 - 37/16 = 43/16 = 2 11/16
The correct result would be D. 2 11/16.
Answer: 6
Steps:
7 + 11 + 0 = 18
18/3 = 6
So you express fraction.
15 x (1/3)^ 3=15/27=5/9
