The transformation negates the y-coordinate, so reflects a point across they x-axis.
Answer:
x = 114°
Step-by-step explanation:
x = 114
vertical angles are equal
You first work out the mean then for each number subtract the mean and square the result then work out the mean of those squared differences and take the square rot of that and you're done :)
If you're looking for the gradient then it will be y=4x otherwise please write the question!