Use a graphing calculator to solve the nonlinear system. Give x- and y-coordinates to the nearest hundredth.
-The sum of the squares of the digits of a positive two-digit number is 61 , and the tens digit is 1 more than the units digit. Find the number.
A) 56
B) 45
C) 54
D) 65

Question

Quizplus · Accepted Answer

The correct number is 65 because if we let the tens digit be x and the units digit be y, we have x^2 + y^2 = 61 and x = y + 1. Solving these equations gives us x = 6 and y = 5, making the number 65.

Use a Graphing Calculator to Solve the Nonlinear System