Thank you for the opportunity to help you with your question!

Thank you for the opportunity to help you with your question!

a) - for 1) y varies directly with x

for 2) y not varies directly with x

b) for 1) k = (y2 - y1)/(x2 - x1) = 4 / 2 = 2

for 2) k = (y2 - y1)/(x2 - x1) = 1 / 3

c) for 1) the equation is : y = kx so is : y= 2x

for 2) the equation is : y= kx so is : y = (1/3)x

each time you have any others homework please invite i will give you the best answers

Good Luck

Please let me know if you need any clarification. I'm always happy to answer your questions.Please let me know if you need any clarification. I'm always happy to answer your questions.