PLEASE HELP the graph for the equation y equals negative 2x + 1 shown below. if another equation is graphed so that the system has no solution which equation could that be?

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2

(c) the diagram shows the first three shapes of a matchsticks arrangement.first shape = 3second shape = 5third shape = 7given m represents the number of matchstick used to arrange the n'th shape.(i) write a formula to represent the relation between m and n. express m as the subjectof the formula.(ii) 19 matchsticks are used to make the p'th shape. find the value of p.

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?