Given the linear function f (x) = 4x - 2 identify the following; Slope

Y intercept (let x = 0)

X intercept (let y = 0)

Is the function increasing or decreasing?

Ineed with math stuff it involves graphs

Arational number that is equivalent to -20/4?

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?