Answer:
The coordinates of the vertices of the image will be:
P'=(-3,-8)
Q'=(-6,4)
R'=(1,-1)
Step-by-step explanation:
If you reflect a point P=(x,y) across the x-axis, the coordinates of the image will be P'=(x,-y), then:
P=(-3,8)=(xp,yp)→xp=-3, yp=8→P'=(xp,-yp)→P'=(-3,-8)
Q=(-6,-4)=(xq,yq)→xq=-6, yq=-4→Q'=(xq,-yq)=(-6,-(-4))→Q'=(-6,4)
R=(1,1)=(xr,yr)→xr=1, yr=1→R'=(xr,-yr)→R'=(1,-1)
6
total no. of seats = 22 x 4 = 88
total no. of seats occupied = 19 * 4 + (22-19)*4/2 = 76 + 6 = 82
no. of empty seats = 88 -82 = 6
