Which ordered pair is a solution of the inequality 4x+5y≤12?

Question

a.

(-2, -6)

b.

(5, 4)

c.

(4, 6)

d.

(11, -1)

Answer 1

You can plug in each value to evaluate - it indeed is option a.

However, inspect the pair visually - and you'll realize that options b and c won't likely fit the solution - both are positive values and therefore will likely be greater than 12

Same goes for option d.

In a timed test, it will help to do a quick visual analysis and the plug in the most likely value - you save time that way.

Answer 2

Answer is option a

 (4*-2) + (5*-6) = -38