What is the constant of proportionality?
x 2 3 4 5
y 6 9 12 15

(a)1/3 (b)3 (c)4
(d)not proportional

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.

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Where would an imaginary line need to be drawn to reflect across an axis of symmetry so that a regular pentagon can carry onto itself