What is the value of the function #y=2x-3# when x=-1? Algebra Graphs of Linear Equations and Functions Applications of Linear Graphs 1 Answer smendyka · Tony B Dec 7, 2016 y = -5 Explanation: Substitute #-1# for #x# in the equation and solve for #y#: #y=2x-3# #y = 2(-1)-3# #y = -2 - 3# #y = -5# Answer link Related questions What are different real world problems that are modeled by Linear equations? How do you use a graph to determine how many hours are required to earn $60 if a job pays $20 per hour? What are the dimensions of a soccer field if the perimeter is 300 years and the length is 50... How many of each calculator was sold if a simple calculator costs $5 and scientific calculator... Is this a linear equation #xy=6#? Is this a linear equation #y^2- 4x=6#? Is this a linear equation #y=0#? Is this a linear equation #4x=2y#? Is this a linear equation #5x+6y=3x-2#? How do you determine if (-5, -4) is a solution of #9x - 4y = -6#? See all questions in Applications of Linear Graphs Impact of this question 9442 views around the world You can reuse this answer Creative Commons License