The intensity (i) of a sound wave varies jointly as the square of its frequency (f), the square of its amplitude (a), the speed of sound (v), and the density (d) of the substance the wave is traveling through. which shows this relationship using k as the constant of proportionality?

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Which inequality is equivalent to -3x < -12? x < 4 , x < -4 , x > 4, x > -4

Graph the system of inequalities presented here on your own paper, then use your graph to answer the following questions: y < 4x − 8 y is greater than or equal to negative 5 over 2 times x plus 5 part a: describe the graph of the system, including shading and the types of lines graphed. provide a description of the solution area. (6 points) part b: is the point (5, −8) included in the solution area for the system? justify your answer mathematically. (4 points)