Which proportion could be used to express 18/20 as a percent

Given the graphed function below which of the following orders pairs are found on the inverse function

The value of x in this system of equations is 1. 3x + y = 9 y = –4x + 10 substitute the value of y in the first equation: combine like terms: apply the subtraction property of equality: apply the division property of equality: 3x + (–4x + 10) = 9 –x + 10 = 9 –x = –1 x = 1 what is the value of y?

Felix wrote several equations and determined that only one of the equations has no solution. which of these equations has no solution?