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.
Some products are used twice a day for 2 weeks, while others are intended for overnight use for 1-2 weeks. If you obtain the teeth bleaching solution from your dentist's office, they can make a custom-fitted tray for you that will fit your teeth precisely. Take-home teeth whitening kit cost: $150 to $400. TEETH WHITENING BASICS A whiter, brighter smile is beautiful-it can help you feel better about yourself and make a memorable impression. Extensive research and clinical studies indicate that whitening teeth under the supervision of a dentist is safe.