Question

Is (-4,2) a solution of 4x+5y<-7

Answer 1

coordinates are (-4,2)

equation :

`4x + 5y < - 7`

substituting values of x and y in equation :

`4( - 4) + 5(2)`

`= - 16 + 10 \\ = - 6 > - 7`

which is not the required solution as - 6 is greater than -7

therefore (-4,2) is not the solution

Answer 2

(-4,2) is NOT a solution

Explanation:

In this question, we have to see if the coordinate is a solution to the inequality.

To do this, plug in and solve:

4(-4) + 5(2) < -7

-16 + 5(2) < -7

-16 + 10 < -7

-6 < -7

Since -6 is not less than -7, this would be false.

Therefore, (-4,2) is NOT a solution.