Answer:
Step-by-step explanation:
Any point with coordinates (x, y) reflected across the y-axis is going to have the opposite x value that it did before.
You should be able to find the coordinates yourself for part a. (you didn't provide the original ones so I can't help you there)
Here is the "rule" for a reflection across the y-axis:

And when we go 1 unit to the right and 2 down, that's the same as

Combining those into one rule is pretty simple, Use our result for the first in the second and we would get

, so the rule is

.
Part A is asking for the coordinates after the reflection (x, y) ⇒ (-x, y).
Part C is asking for the coordinates after the full translation ⇒ (-x+1, y-2)
Answer:
Step-by-step explanation:
<u>Required expression:</u>
<u>Options:</u>
- A. 8/x + 1, correct
- B. 8x + 1, incorrect
- C. 8 - x + 1, incorrect
- D. 8 / (x - 1), incorrect
First, convert to improper fractions, which are easier to use for us:
16/7-4/3
Convert to a common denominator of 21:
48/21-28/21
Finally, subtract to get:
20/21