Which description is represented by a discrete graph?

Solve the inequality and graph 6j - 7 < 5

Which will form a composite function?

Will mark 50 show all what is the solution to the system of equations? use the substitution method and show your work. -5x+y= -3 -15 x+3y=7 explain what your answer in part (a) tells you about the association of the lines in this system.