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## Answers

## Nina34

## Best answer

Let point A(-2,4) = A (X1,Y1)

point B( 1,3 )= B (X2,Y2)

point C(4,-1) = C (X3,Y3)

and point D(?, ?) = D (X4,Y4) We have to find this point

To find X4 we have to use the formula:

X2-X1=X3-X4

Now just plug in the numbers that correspond to the letters provided:

(1)-(-2)=(4)-(X4) ----> we don't know what X4 is yet, so we have to solve for it!

1+2=4-X4

3=4-X4

3-4=-X4

-1=-X4 divide both sides by -1

X4=1

Now we have to find Y4 using this formula:

Y2-Y1=Y3-Y4

Therefore,

(3)-(4)=(-1)-(Y4)

-1=-1-Y4

-1+1=-Y4

0=-Y4

So,

Y4=0

Now we have found the coordinates of the point D, which is (1,0)

Hope this helped!