PLEASE HELP ME Examine this table of points, which are all on a certain line.

x y
−5 0
−1 −8
1 −12
4 −18

What is the slope of this line?

Enter your answer as a number, like this: 42

Or, if the slope is undefined, enter a lowercase letter "u," like this: u

Titus works at a hotel. part of his job is to keep the complimentary pitcher of water at least half full and always with ice. when he starts his shift, the water level shows 4 gallons, or 128 cups of water. as the shift progresses, he records the level of the water every 10 minutes. after 2 hours, he uses a regression calculator to compute an equation for the decrease in water. his equation is w –0.414t + 129.549, where t is the number of minutes and w is the level of water. according to the equation, after about how many minutes would the water level be less than or equal to 64 cups?