Find the coordinates of the image after a reflection in the given line.

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?

How to choose the sign of the radical in the denominator of the formula for the distance from a point to a line.

The parabola opens: y=√x-4 (principal square root) up down right left