exam Maths Puzzle Numerical Ability

the augmented matrix

[1 3 2 | 4]
[2 -1 5 | -2]
[-3 1 6 | 1]


represents what system of equations.

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exam Other Question

Write an equation for the line containing the indicated points.

(-9,1) and (-1/2,1)
Find the GCF of the product.

(3b+6)(2b-10)

I got 3 for the first parenthesis and 5 for the second but you can only have one answer. What am I forgetting?