How do you determine (5,2) is a solution to x+y=8? Algebra Expressions, Equations, and Functions Functions that Describe Situations 1 Answer smendyka Nov 28, 2016 #7# does not equal #8# therefore #(5,2)# is not a solution for this equation. Explanation: Substitute #5# for #x# and #2# for #y# in the equation. If the result equals #8# it is a solution. If it does not equal #8# it is not a solution. #5 + 2 = 8# #7 = 8# #7# does not equal #8# therefore #(5,2)# is not a solution for this equation. Answer link Related questions What is an example of a function that describes a situation? How do you write a function rule that describes a cost of a CD that is $2 each? Why do you write functions to describe real life situations? How do you write the function rule for an auto place that charges $20 flat rate plus $27 per hour? What is the function rule for the following relationship: #f(2)=8#, #f(4)=12#, #f(6)=16#? What is the function rule where the y values are 1, 8, 64 corresponding to the x values that are 1, 2, 3? How do you write a function notation for the situation: 10 more than twice the number x? How do you write a function rule for the number of cuts you need to make to cut a rope into x pieces? How much does Solomon make for a 2-hr job, if he charges $50 flat rate plus $25 per hour to fix... How do you express the cost of making x small boxes, y medium boxes, and z large boxes, it costs... See all questions in Functions that Describe Situations Impact of this question 1947 views around the world You can reuse this answer Creative Commons License