What is the unit rate of 286 miles in 5 in a half hours?

The answer is:  " 52 mi / h " ;  or, write as:  " 52 m.p.h. "  .

Explanation:  

Given:  

  "286 mi per 5.5 h " ;  or, "(286 mi / 5.5 h)" ;

  → Convert to "miles per (unit hour, or single hour)" .

So;  286 mi / 5.5 h = (286/5.5) mi / h = "52 mi / h" ; or, write as: "52 m.p.h." .

Is there more to the question?

I’m going to infer you said parallel.solve for yy= -1/2x+7/4lines that are parallel have the same slope, different y intercept.so we know m is -1/2then from there solve for y intercept.