HELP please! If line r and m are parallel, which of the following statements is not always true?

a. m∠5+m∠11=180°
b. ∠7 & ∠1 are supplementary
c. ∠7≅∠5
d. ∠1≅∠5

F(x)= 1/x-4, g(x)=4x+1/x a. use composition to prove whether or not the functions are inverses of each other. b. express the domain of the compositions using interval notation.

This graph shows a portion of an odd function. use the graph to complete the table of values. x f(x) −2 −3 −4 −6

Which statement is true about the extreme value of the given quadratic equation? a. the equation has a maximum value with a y-coordinate of -21. b. the equation has a maximum value with a y-coordinate of -27. c. the equation has a minimum value with a y-coordinate of -21. d. the equation has a minimum value with a y-coordinate of -27.