Question

Which of these ordered pairs is a solution to the inequality
2x + y > – 4 ?

A.
(0, –5)

B.
(–1, –1)

C.
(–3, 0)

D.
(4, –12)

Answer 1

can someone exlpain how to do this

Answer 2

take each choice,
plug it into the equation,
and see if the equation is true or false,
so,
(0, –5)
2(0) + (-5) > – 4 [false]

you try the next one..

Answer 3

pick a point of the choices, test it against the inequality, if the inequality turns out to be true, the that point is a solution

Answer 4

2(0) + (-5) > – 4 [false] <--- notice why is false

-5 > -4 <----- the closer to the Zero on the negative side, the SMALLER the quantity
so -5 is NOT BIGGER than -4, thus is false

something yielding false will be say.... like 2 < 0, because 2 is clearly NOT less than 0, is more

or 3 < 5, or 6 > 9 and so on

a TRUE result will be say
2 > 1 true
or
6 < 9 true too

Answer 5

so its b right

Answer 6

hmm lemme reword that a bit

-5 > -4 <----- the \(\bf farther\) from Zero on the negative side, the SMALLER the quantity
so -5 is NOT BIGGER than -4, thus is false

Answer 7

hmm what did you get for B ?

Answer 8

-3>-4

Answer 9

yeap, -3 is \(\bf closer\) to zero on the negative side, thus is BIGGER than -4

Answer 10

ty so much

Answer 11

yw