At 1 on the family resumes their trip and they reach Helena at 5 pm the total distance from the family home to Helena is 485 miles. Including the 30 minute lunch stop, what is the average speed over the entire trip?

sorry not an answer, but i have the same question. if you can, may you let me know the answer if you get it.

Step-by-step explanation:

x=-2

infinite number of lines, so there is an infinite number of equations.

step-by-step explanation:

there are an infinite number of line that passes through the point (-2,5)

x=-2   is one line that passes through the point

y = 5 is another line that passes through the point

(these two lines are perpendicular to each other).

since the number of   numbers are infinite and the slope is the ratio of two numbers,(change in y over change in x) we can have an infinite number of slopes.     our only condition is that it passes through the point (-2,5)