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.
1 In-office teeth whitening treatments by a dentist can cost $300-$1,000 or more, but average about $500-$700. Teeth whitening stores or stands in malls, spas, tanning salons, beauty salons or similar facilities typically charge $50-$200 per treatment, and use products and deliver results similar to over-the-counter systems.