Hurry whoever answers first will be the !
which statement best explains the relationship between lines fg and hj?

a. they are perpendicular because their slopes are equal.
b. they are perpendicular because their slopes are negative reciprocals.
c. they are not perpendicular because their slopes are equal.
d. they are not perpendicular because their slopes are not negative reciprocals.

Write the expression as a constant , a single trigonometric function, or a power of a trigonometric function. sin x cos x/ tan x

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)

Which geometric principle is used to justify the construction below?