Sea A={1,2,3,4}, los elementos de la relación R={(x, y)/x, y ∈ A y x divide a y} son

Find an equation for the linear function which has slope -10 and x-intercept -7

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

Ab and bc form a right angle at point b. if a= (-3,-1) and b= (4,4) what is the equation of bc?