Question

MEDAL AND FAN FOR RIGHT ANSWER




An image point after a 180° rotation is Z'(9, 2). What were the coordinates of the pre-image point?


Z(2, 9)
Z(-9, -2)
Z(-2, 9)
Z(2, -9)

Answer 1

180 is just basically a half degree turn so the points it is on now is (9, 2)

Answer 2

So first we need to think where (9, 2) is on the grid. It is in the 1st quadrant.
Right?

Answer 3

yea

Answer 4

So we turn it around or go back and it is turning across the x axis.

Answer 5

Now when we turn it around, where does it land?
Like just turn it around half way.

Answer 6

It is gonna be in the 4th quadrant.
Which answer is in the 4th Quadrant?

Answer 7

d?

Answer 8

Right!

Answer 9

Because when you turn the figure back 180 degrees, it lands on (2, -9)

Answer 10

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