Write the equation of the line in fully simplified slope-intercept form

Lines a and b are parallel. what is the value of x? -5 -10 -35 -55

(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.

What are the excluded values? m+5/mn+3m