What is the equation of a line that passes through the point (4, 2) and is perpendicular to the line whose equation is y= x/3−1 ?

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

Thompson and thompson is a steel bolts manufacturing company. their current steel bolts have a mean diameter of 127 millimeters, and a variance of 36. if a random sample of 35 steel bolts is selected, what is the probability that the sample mean would differ from the population mean by greater than 0.5 millimeters? round your answer to four decimal places.

On the first of each month sasha runs a 5k race she keeps track of her times to track her progress her time in minutes is recorded in the table