The town library is having a used book sale. The Graph below can be used to find the cost y to buy x books. The total cost includes the admission fee. What is the equation of the line shown? A: y = x + 4
B: y = x - 4
C: y = -x + 4
D: y = -x - 4

Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by â’4 to get â’16x â’ 4y = â’80 multiply the second equation by â’1 to get â’4x â’ y = â’20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by â’1 to get â’2x â’ 4y = â’14