How do you solve this equation and graph it? i'm so confused.

y= -2x

Solve the system of equations. y= 2x y= x^2 - 15

Which is the graph of f(x) = (4)x? image for option 1 image for option 2 image for option 3 image for option 4

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.