Given sin(x) = -4/5 and x is in quadrant 3, what is the value of tan(x/2)? Solve using the trigonometric identities.

(note i put the graph in so plz )the graph shows the amount of water that remains in a barrel after it begins to leak. the variable x represents the number of days that have passed since the barrel was filled, and y represents the number of gallons of water that remain in the barrel. what is the slope of the line

On a piece of paper, graph . then determine which answer choice matches the graph you drew

Me with this one question, and i'll upvote the brainliest answer