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$\\overline{pq}$ is reflected across the line $x=-3$. the coordinates o…

D. $(-8, 4)$

Kategorie: geometry Aktualisiert: 2026-02-09

Aufgabe

$\\overline{pq}$ is reflected across the line $x=-3$. the coordinates of the endpoints of the image of $\\overline{pq}$ are $p(5, 2)$ and $q(2, 4)$. what are the coordinates of $q$?
a $(1,4)$
b $(-3,4)$
c $(5,4)$
d $(-8,4)$

Lösungsschritte

  1. Understand the question

    $\\overline{pq}$ is reflected across the line $x=-3$. the coordinates of the endpoints of the image of $\\overline{pq}$ are $p(5, 2)$ and $q(2, 4)$. what are the coordinates of $q$?
    a $(1,4)$
    b $(-3,4)$
    c $(5,4)$
    d $(-8,4)$

  2. Explanation

    Step1: Recall reflection rule for $x=k$

    For a point $(x,y)$ reflected over $x=k$, the pre-image $x$-coordinate satisfies $k = \frac{x + x'}{2}$, where $x'$ is the image $x$-coordinate. The $y$-coordinate stays the same.

    Step2: Identify known values for $Q'$

    We have $k=-3$, $x'=2$, $y'=4$.

    Step3: Solve for pre-image $x$-coordinate

    Rearrange the formula: $x = 2k - x'$
    Substitute values: $x = 2(-3) - 2 = -6 - 2 = -8$

    Step4: Determine $y$-coordinate of $Q$

    Since reflection over vertical line preserves $y$-coordinate, $y = y' = 4$.

  3. Final answer

    D. $(-8, 4)$

Antwort

Explanation

Step1: Recall reflection rule for $x=k$

For a point $(x,y)$ reflected over $x=k$, the pre-image $x$-coordinate satisfies $k = \frac{x + x'}{2}$, where $x'$ is the image $x$-coordinate. The $y$-coordinate stays the same.

Step2: Identify known values for $Q'$

We have $k=-3$, $x'=2$, $y'=4$.

Step3: Solve for pre-image $x$-coordinate

Rearrange the formula: $x = 2k - x'$
Substitute values: $x = 2(-3) - 2 = -6 - 2 = -8$

Step4: Determine $y$-coordinate of $Q$

Since reflection over vertical line preserves $y$-coordinate, $y = y' = 4$.

Answer

D. $(-8, 4)$

Question Image

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Question Analysis

Subject mathematics
Sub Subject geometry
Education Level high school
Difficulty unspecified
Question Type multiple choice, calculation
Multi Question No
Question Count 1
Analysis Status completed
Analyzed At 2026-02-09T19:46:47

OCR Text

Show OCR extraction
$\\overline{pq}$ is reflected across the line $x=-3$. the coordinates of the endpoints of the image of $\\overline{pq}$ are $p(5, 2)$ and $q(2, 4)$. what are the coordinates of $q$?
a $(1,4)$
b $(-3,4)$
c $(5,4)$
d $(-8,4)$

Verwandte Themen

mathematicsgeometrymultiple choice, calculationhigh schoolturns-1

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