3)
The given point is (5,4).
We know that reflecting across the x-axis is
Substitute x=5 and y=4, we get
Reflecting (5,4) across the x-axis is (5, -4).
4)
The given point is (3,1).
Translate the point (x,y) by right 2 and down 5.
We add 2 to x for translate right 2 and we add negative 5 to y for translate down 5.
Substitute x=3 and y=1, we get
Translate the point (3,1) by right 2 and down 5 is (5, -4).
5)
The given point is (2,1) and the scale factor is 2.
Multiplying the point (2,1) by 2, we get
Dilate the point (2,10 by the scale factor 2 is 94,2).