Acircle with center c(4,-2) contains the point d(8, 1). what is the equation of the line perpendicular to the radius of the circle passing through point c?

Answer this question! 30 points and brainliest! only if you know the answer.

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil

Tom travels between the two mile markers shown and then finds his average speed in miles per hour. select the three equations that represent this situation.