exam Maths Puzzle Numerical Ability

find the equation of the line through the points (-2,4) parallel to the line
2x+7y=9

i tried solving for "y" but was not really sure if i was doing it right
or what to do after
-a/b=-2/7

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exam Other Question

Four exponential functions of the form y=a(b)^x presented in the table below.Which function has the largest "b" value ?
x,f,g,h,k
1,1.5,3,4.5,3.5
2,2.25,4.5,6.75,7 I think the Sarah needs to borrow $1500 for her school tutition. She borrows the money on a six monthe short term note that charges simple interest. After 6 months, she owes $90.00 in interest. What is the simple interest rate being charged on this note?