When we reflect a point across y=x, the x and y coordinates switch out , that is (x,y) becomes (y,x) . SO for point (1,2), on reflection across y=x, (1,2) becomes (2,1) . And when we do reflection across y=-x, (x,y) becomes (-y,-x). Therefore point (2,1) on reflection across y=-x becomes(-1,-2) .
So the final answer is (-1,-2) .
Answer:
9
Step-by-step explanation:
k=-9
-9×-9
81 square rooted
9
Answer:
C
Step-by-step explanation:
Distribute x^2 to 2x and 5, you’ll get 2x^3+5x^2.
The distribute 3 to 2x and 5, you’ll get 6x+15.
You’ll get what the question is asking for.
Answer:
option A is the answer hope you find it helpful
D(-1,-1), E(-8,-4), F(-8,-8)