exam Maths Puzzle Numerical Ability

instuctions-solve each system by the graphing method.

this makes no sense and the problem is stright out of the book

y=x
y=6-x

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exam Other Question

Ernest works in the shipping department loading shipping crates with boxes. Each empty crate weighs 150lb. How many boxes, each weighing 35lb,can Ernest put in the crate if the total weight is to be no more than 850lb? I need to write a power function in form of y=ax^b passing through points (2,3)(6,7). This is what I've got so far:3=a*2^b a=3/2^b and 7=a*6^b

Then I've got 7/3 =3/2^b *6b. N