(a) Use the substitution method to justify that the given system of equations has no solution. (b) What do you know about the two lines in this system of equations?

{3 + i, 3 - i, 3, -1}

step-by-step explanation:

range is infinite on both x and y axis positive and negative

step-by-step explanation:

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