Question

Help me please !!!

Answer 1

With?

Answer 2

Graph a triangle (STU) and reflect it over the y-axis to create triangle S'T'U'.
Part 1: Describe the transformation using words. (3 points)
Part 2: Draw a line segment from point S to the reflecting line, and then draw a line segment from point S' to the reflecting line. What do you notice about the two line segments you drew? (2 points)
Part 3: Do you think you would see the same characteristic if you drew the line segment connecting T with the reflecting line and then T' with the reflecting line? How do you know?

Answer 3

To reflect a point over the y axis you just change the sign of the x coordinate. The y coordinate will remain the same.

Answer 4

ok but i mainly need help on part two and three

Answer 5

Part 2) The line segments will be of equal lengths.

Part 3) Yes, I would see the same characteristic if I drew the line segment connecting T with the reflecting line and then T' with the reflecting line. They will be of equal lengths.
How do you know? We get the reflection by replacing the x with minus x and so they are equidistant from the y axis.

Answer 6

In part 2 they don't give you an accurate picture. They say draw a line segment from S to the reflecting line. This is vague. Because you can draw a line segment horizontally or at an angle. Then they say draw another line segment from S' to the reflecting line. This once again can be any line, horizontal or at an angle. You cannot say much about the two line segments.

But if you draw any line segment from S to y axis and then from the point where it intersects the y axis you draw a line segment to S' then those two lines will be equal lengths.

Or, if you draw horizontal lines from S and S' to the reflecting line, then they will be of equal lengths and also be one straight line. This is probably what they meant but they were not clear in the question.

Answer 7

thank you so much :) now I really do understand it now

Answer 8

you are welcome.