exam Maths Puzzle Numerical Ability

Find the missing coordinate to complete the ordered-pair solution to the given linear equation.

y=6x+5
(a)(0,)
(b)(3,)

5x+2y=9
(a)(7,)
(b)(,-7)

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exam Other Question

Express using a positive exponent.

1/y^-7 This is supposed to look like a fraction with a negative exponent. I need to find the closed form of this recursive function: a(n)= 5*a(n-1) where a(0) is the initial value?