7d – 4d – 3d – 5 = 6d

Step-by-step explanation:

7d – 4d – 3d – 5 = 6d

(7d - 4d = 3d)

3d - 3d -5 = 6d

(3d - 3d = 0)

0 - 5 = 6d

-5 = 6d

-5/6 = 6d/6

d =

Hope this helps ^-^

P(-1, 0); Q(0, -1); R(2, -1).

Step-by-step explanation:

When you reflect coordinates over the y-axis, the y-coordinates do not change, while the signs of the x-coordinates are flipped. You can see the example attached!

And so, after reflecting P'(1, 0), you would get P(-1, 0) because the sign of the x-value is flipped and the y-value does not change.

Q'(0, -1) becomes Q(0, -1) because 0 is neither negative nor positive, and the y-value does not change.

R'(-2, -1) becomes R(2, -1) because the sign of the x-value is flipped to positive and the y-value does not change.

Hope this helps!