Helpp all the questions please

15 and 14.7 are 1 apart, so 15 – 14.7 must be 1.

Select the correct answer from each drop-down menu. a system of equations and its solution are given below. system a complete the sentences to explain what steps were followed to obtain the system of equations below. system b to get system b, the equation in system a was replaced by the sum of that equation and times the equation. the solution to system b the same as the solution to system a.]

What is the y-intercept of the line with the equation 3x + 4y = 12?