Write the slope intercept form of the equation of the line through the given points

The depth of a lake at a certain point, wich is a function of the distance of that point from shore, is 30 feet.

Which graph represents an even function?

Talia took the bus from her home to the bank and then walked back to her home along the same route. the bus traveled at an average speed of 40 km/h and she walked at an average speed of 5 km/h. to determine the time, x, that it took talia to walk home, she used the equation 40(0.9 – x) = 5x. the time of trip 2 is hours. the distance of trip 1 is km.