The ounces of yellow paint y needed to mix with x ounces to blue paint to make a certain shade of green paint can be represented by the equation y=1.5x What is the constant proportionality of the equation

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.

answer: y = -2.5x - 15

              (-6,0)

step-by-step explanation:

for this case we must apply distributive property to the following expression:

the distributive property states that:

then, when applying the property we have to multiply the -2 for each term within the parenthesis: