after two years on the job, an engineer salary was $60,000. after seven years on the job, her salary was $66,000. let y represent her salary after x years on the job. Assuming that the change in her salary over time can be approximated by a straight line, give an equation for this line in the form y=mx+b
Accepted Solution
A:
Answer: y = 1200m + 57,600Step-by-step explanation: To be a line, let's say that x is the numbers of years on the job and y the salary.So, we have (2,60000) and (7,66000)y = mx + b66000 = 7m + b 60000 = 2m + b (-)________________________6000 = 5mm = 6000/5 = 120060000 = 2m + b60000 = 2.1200 + b60000 = 2400 + bb = 60000 - 2400 b = 57600y = mx + by = 1200m + 57,600