In the ordered pair (12, –7)

a. the abscissa is –7 and the ordinate is 12.
b. the abscissa is –12 and the ordinate is 7.
c. the abscissa is 12 and the ordinate is –7.
d. the abscissa is 7 and the ordinate is –12.

The correct answer for the question that is being presented above is this one: "C. the abscissa is 12 and the ordinate is –7." In the ordered pair (12, –7) the abscissa is 12 and the ordinate is –7. The abscissa always refer to the x value and the ordinate always refer to the y value.

Yes you do, so £1973.09 - £1473.50 = £499.59 so tim overpaid £499.59 .hope this ; )