Given the equation 5x + y = 7, which equation below would cause a consistent-independent system?
a.10x + 2y = 14
b. -15x - 3y = -6
c.5x + y = -7
d.6x + 2y = 7

(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.