63x2=126
66x2=132
126+132=258
Area is 258cm
The answer is in the photo provided
Draw the two points in a rectangular coordinate system.
Draw a vector from the origin (0,0) until the point Y whose coordinates are (-1,3). Rotate the vector 90 degress anticlockwise.
You can see that the tip of the vector will fall in a point with coordinates (3,-1).
Then Y' is (3,-1).
Follow same procedure with point X(-6,2). The point of the vector will translate to X' with coordinates (-2,-6).
A 90 degrees anticlockwise rotation transforms coordinates (a,b) to (-b,a)
Then the answer is the option 3 - X'(-2,-6) Y'( 3,-1).
By convention if there is not indication the angles must be taken anticlockwise, but it would be better to indicate it.
If you rotate 90 degress clockwise the end points would be X'(2,6) Y'(3,-1).
Find 2 numbers that multiply to 6 and add to 5.
3*2 = 6
3+2 = 5
x^2 + 5x+6 = (x+3)(x+2) = 0
Set each factor equal to zero.
x+3 = 0 ----> x = -3
x+2 = 0 -----> x = -2
Answer:
There are two zeros at -2 and -3.