If you get right answer good review but when describing the answer either use a b c or d

Graph A.

Step-by-step explanation:

You want the equation in slope-intercept form, y=mx+b. In x+y=7, you want the y by itself, so subtract x on both sides to get y=-x+7. After that, on the graph, go up 7 units on the y-axis, down 1 unit indicated by -x, and 1 to the right. Strikethrough both dots and you get Graph A.

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15