Kelly realizes once she gets to Round Rock that she left her Art project (a major grade) at her mother's house in Plano. She would not have time to have it shipped before it is due the next day and convinces her brother to meet her part of the way. If the average speed limit from Plano to their meeting point (on the North side of West, TX) is 65 miles per hour, and the average speed limit from Round Rock to their meeting point is 75 miles per hour, how many miles will Kelly's brother have to drive before he reaches Kelly if the driving distance between them is 196 miles and they drive the same amount of time? I saw this has been answered already but the one answer didn’t have a detailed answer

the functions have the same rate of change i think. i narrowed it down to this answer and "the rate of change of tour 1 is greater" but i got it wrong using that answer so im assuming its the answer above. (this is a question i also answered from the iready site if anyone needs a reference)

step-by-step explanation:

rectangles are made up of 4 right angles, which means that a side and a base meet perpendicular to one another.   their slopes then have to reflect perpendicular slopes.   perpendicular slopes are opposite reciprocals of one another.   for example, if the slope of one line is +2/3, then the perpendicular slope to that would be -3/2.   so we look for that combination in our choices.

all of them satisfy that condition (so what's the question, i guess? )