Middle School

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On a coordinate plane, an absolute value graph has a vertex at \((-4, -2)\). Which equation represents the function graphed on the coordinate plane?

A. \( g(x) = |x + 4| - 2 \)
B. \( g(x) = |x - 4| - 2 \)
C. \( g(x) = |x - 2| - 4 \)
D. \( g(x) = |x - 2| + 4 \)

Answer :

Answer:

The equation that represents the point(-4,-2) is g(x)=|x+4|-2.

Option:A.

Explanation:

The given vertices are (-4,-2).

Substitute the vertices in the equations and equate the values to find the equation.

The value given inside the modulus is always positive. eg: |-4|=|4|.

Substitute the vertices in equation g(x)=|x+4|-2.

-2=|-4+4|-2.

-2=0-2.

-2=-2.

The equation g(x)=|x+4|-2 has the vertex (-4,-2).

Check with other equation to confirm the answer.

Substitute the vertices in equation g(x)=|x-4|-2.

-2=|-4-4|-2.

-2=8-2.

-2≠6.

∴ The equation g(x)=|x-4|-2 doesn't has the vertex (-4,-2).

Substitute the vertices in equation g(x)=|x-2|-4.

-2=|-4-2|-4.

-2=6-4.

-2≠2.

∴ The equation g(x)=|x-2|-4 doesn't has the vertex (-4,-2).

Substitute the vertices in equation g(x)=|x-2|+4.

-2=|-4-2|+4.

-2=6+4.

-2≠10.

∴ The equation g(x)=|x-2|+4 doesn't has the vertex (-4,-2).

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Rewritten by : Batagu

Answer:

A.g(x)=|x+4|-2.

Explanation: