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.
There are plenty of teeth whitening options, including over-the-counter teeth whitening strips and professional in-office whitening treatments. How much does teeth whitening cost? The cost of professional teeth whitening can range as high as $650, depending on the treatment type. In this article, we'll look at teeth whitening cost, and help you decide if teeth whitening is right for your child.