What is the gradient of the straight line 2y = -3x-8

Anyone know? will mark brainliest if correct

Janet drove 300 miles in 4.5 hours. write an equation to find the rate at which she was traveling

The manufacturer of a new product developed the following expression to predict the monthly profit, in thousands of dollars, from sales of the productwhen it is sold at a unit price of x dollars.-0.5x^2 + 22x - 224what is represented by the zero(s) of the expression? a.the profit when the unit price is equal to 0b.the unit price(s) when the profit is equal to 0c.the profit when the unit price is greatestd.the unit price(s) when profit is greatest