Which relations are functions?function or not a function?

Mathematics

1 answer:

Bad White [126]2 years ago

6 0

Hi there,

The first one is a function this is because it has a straight line and you are able to figure out the slope.

The second one is not a function because it is not a straight line and with that you are unable to determine the slope.

The third one is a function. It has a straight line.

Lastly, the fourth one is not a function. It doesn't have a straight line

Hope these are correct :)

Have a great day

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bearhunter [10]

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Step-by-step explanation:

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Find the perimeter of a triangle with vertices A(3, 1), B(2, -1), and C(-3, 2). Leave

natulia [17]

The perimeter of triangle is: 14.15 units

Step-by-step explanation:

First of all we have to find the lengths of sides of triangles

Given

A(3, 1), B(2, -1), and C(-3, 2)

The distance formula will be used to find the lengths of sides

$d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\\$

So,

$AB = \sqrt{(2-3)^2+(-1-1)^2}\\=\sqrt{(-1)^2+(2)^2}\\=\sqrt{1+4}\\=\sqrt{5}\\=2.24\ unitsBC = \sqrt{(-3-2)^2+(2+1)^2}\\=\sqrt{(-5)^2+(3)^2}\\=\sqrt{25+9}\\=\sqrt{34}\\= 5.83\ units\\AC = \sqrt{(-3-3)^2+(2-1)^2}\\=\sqrt{(-6)^2+(1)^2}\\=\sqrt{36+1}\\=\sqrt{37}\\=6.08\ units$