standard_description: Solve real world problems involving multiplication of fractions and mixed numbers, e.g., by using visual fraction models or equations to represent the problem.
problem_activity: Use the coordinate plane below for Parts (a) and (b).
[IMG]
a.   Draw a line through points
M
and
N
.
b.   Draw a second line that is perpendicular to
$$\overleftrightarrow{MN}$$
.


aligns: no