How do you determine if (-1,-3) is a solution to $y>=-5x^4+7x^3+8$ ?

Question

1376 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-11-13T15:25:16

Substitute the point in the inequality. If the end result makes sense mathematically, it is a solution.

$-3 ≥^? -5(-1)^4 + 7(-1)^3 + 8$

$-3 ≥^? -5(1) + 7(-1) + 8$

$-3 ≥^? -5 - 7 + 8$

$-3 ≥ -4" "color(green)(√)$

So, the point $(-1, -3)$ is a solution to the inequality.

Hopefully this helps!

How do you determine if (-1,-3) is a solution to y>=-5x^4+7x^3+8y>=-5x^4+7x^3+8?