Answer:
A = 12
Step-by-step explanation:
Given A is inversely proportional to B then the equation relating them is
A =
To find k use the condition when A = 4, B = 36 , then
4 = ( multiply both sides by 36 )
144 = k
A = ← equation of variation
When B = A , then
A = ( multiply both sides by A )
A² = 144 ( take square root of both sides )
A = ± = ± 12
Since A is a positive number then A = 12
<u>Given</u>:
The vertices of the quadrilateral WXYZ are W(2,4), X(4,2), Y(2,1) and Z(0,2)
The graph is rotated 90° about the origin.
We need to determine the coordinates of the quadrilateral W'X'Y'Z'
<u>Coordinates of the quadrilateral W'X'Y'Z':</u>
The rule to transform the coordinates 90° counter clockwise about the origin is given by
Let us substitute the coordinates.
The coordinates of W' is given by
The coordinates of X' is given by
The coordinates of Y' is given by
The coordinates of Z' is given by
Therefore, the coordinates of the vertices W', X', Y' and Z' are (-4,2), (-2,4), (-1,2) and (-2,0) respectively.
Answer:
<h2><u>Required Answer</u><u>:</u><u>-</u></h2>__________________________
2-A (-3,4)