What are the coordinates of point H? On a coordinate plane, point H is 1.5 units to the left and 3 units up. (Negative 3, 1 and one-half) (Negative 1 and one-half, 3) (1 and one-half, 3) (3, negative 1 and one-half)

We are given positions of the coordinates of C and D :

"From the origin, point C is 1.5 units to the left and 3 units up."

1.5 units left of the origin is x = negative 1.5 and 3 units up origin is y = 3.

Therefore, first coordinate on the axis is C(-1.5, 3).

"From the origin, point D is 1.5 units to the right and 3 units up."

1.5 units right of the origin is x =  1.5 and 3 units up origin is y = 3.

Therefore, second coordinate on the axis is D(1.5, 3).

We can see than x-coordinates of C and D are opposite in sign.

When we have x-coordinates opposite in sign, it would be reflection over y-axis.

Therefore, correct option is:

D is C reflected across the y-axis; only the signs of the x-coordinates are different for C and D.

18a

step-by-step explanation:

simply because it is. it's the highest common factor