Plss do the working
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A=1/2ab
Replace the variables with their value
15=1/2(3/2)b
Multiply 1/2 and 3/2
15=3/4b
Divide 3/4 on both sides
15/(3/4) is the same thing as
45/4=b
Replace the variables with their value
15=1/2(3/2)b
Multiply 1/2 and 3/2
15=3/4b
Divide 3/4 on both sides
15/(3/4) is the same thing as
45/4=b
Let us try reflecting (2,3) about x=y and across x-axis and y-axis.
If we are reflecting about y=x, that means both x,y values will be interchanged that is (2,3) will become (3,2)and this will be achieved by .
And for reflection across x-axis,y-value will be multiplied by -1.That is (2,3) becomes (2,-3) and the matrix used to achieve it is .
For reflection across y-axis, x-value will be multiplied by -1. That is (2,3) becomes (-2,3) when reflected across y-axis. The matrix used to achieve it will have -1 in the first place that is