The slope of y=2x+1 is: 2. The parallel line needs to have the same slope of 2. We can solve it using the point-slope equation of a line: y â y1 = 2(x â x1) And then put in the point (5,4): y â 4 = 2(x â 5) And that answer is OK, but let's also put it in y = mx + b form: y â 4 = 2x â 10.
1 In-office teeth whitening treatments by a dentist can cost $300-$1,000 or more, but average about $500-$700.
Take-home whitening costs fall between the cost of over-the-counter whitening and in-office professional whitening. However, there are professional grade take-home whiteners that can be as effective as in-office treatment, and therefore cost as much. In general, the cost of take-home teeth whitening ranges from $100 to $400. In Office Teeth Whitening Costs. In-office bleaching performed at the skilled hands of an experienced professional is the most expensive whitening option available.