Find equations for the horizontal and vertical tangent lines to the curves

Which equation represents a line that is parallel to the line whose equation is 3x-2y=7( show all work)

Write an equation of the line that passes through 9,2 and is parallel to the line y=5/3x+9

Adecibel is a logarithmic unit that can be used to measure the intensity of a sound. the function y = 10logx gives the intensity of a sound in decibels, where x is the ratio of the intensity of the sound to a reference intensity. the reference intensity is generally set at the threshold of hearing. use the graphing utility to graph the decibel function.a whisper has a sound intensity of 30 decibels. use your graph to you complete the following statement. the sound intensity of a whisper is times the reference intensity.