What is the equation of this line? Please Help

y=1/2x -2
y=-2x -2
y=2x -2
y=-1/2x -2

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?

You decide instead to take the train there. the train will take 135 minutes. convert this into hours and minutes.

The table represents a linear function. what is the slope of the function? –6 –4 4 6