exam Maths Puzzle Numerical Ability

FIND EACH PRODUCT
(3Y^2 + 1) (3Y^2 - 1)

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exam Other Question

This is the same as the last question. I am so lost. help please..thank you

Solve the system of equations by graphing. Then classify the system as consistent or inconsistent and find values for m and b in the following system so that the solution to the system is (-3,4)

5x+7y=b
mx+y=22

5(-3)+7(4)=13
-6(-3)+4=22

Is this all the steps or am I missing something?