Answer:
3rd option
Step-by-step explanation:
Under a rotation about the origin of 270°
a point (x, y ) → (y, - x ) , then
A (- 3, 4 ) → (4, - 3 )
B (4, - 5 ) → (- 5, - 4 )
C (1, 6 ) → (6, - 1 )
Given:
The coordinates of point A are (7,4).
It is dilated from the origin by a scale factor r = 3.
To find:
The coordinates of A'.
Solution:
If a figure is dilated from the origin by a scale factor k, then

Here, the figure is dilated from the origin by a scale factor 3, so the rule of dilation is given by:

Using this rule, we get


Therefore, the coordinates of point A' are (21,12).
Answer:

Step-by-step explanation:
We are asked to multiply the given polynomials.

Multiply each term of the first polynomial to each term of the second polynomial.



Add the results

Combine the like terms

The answer is written in descending powers of x.
Find the vertex form.
y=(x+2)^2−11
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Answer:
answer is 27 hope it helps