Android studio, I do have a gap between a picture and screen end

Question

Here is the screenshot with the code and gap issue , I tried get it done with the match_parent and it does not work, please advice how can I fix it.

enter image description here

<androidx.constraintlayout.widget.ConstraintLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent">

</androidx.constraintlayout.widget.ConstraintLayout>
<ImageView
    android:id="@+id/iv_background"
    android:layout_width="match_parent"
    android:layout_height="275dp"
    android:contentDescription="@string/appbar_scrolling_view_behavior"
    android:src="@drawable/slide_show"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintHorizontal_bias="0.545"
    app:layout_constraintStart_toStartOf="parent" />