exam Maths Puzzle Numerical Ability

Find the equation, in standard form, with all integer coefficients, of the line perpendicular to x + 3y =12 and passing through (9,-5).

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exam Other Question

A saleswoman at a car dealership earns $1200 per month plus a 9% commission on her total sales. If she earned $7320 last month, what was the amount of her sales? Graph each of the following equations, using the intercept method. See Example 7 (p 534) in the text for reference.
28) 2x + 3y = 6