Use substitution to solve the system of equations.

y = 2x + 16
2x – 7y = –64

question 6 options:

(–4, 8)

(–1, 11)

(8, –4)

(–7, –11)

(-4, 8)

Step-by-step explanation:

The two equations in the system are:

We are asked to use substitution, so we select the first equation as our substitution equation, since we have it already expressed in the form that indicates what the unknown "y" is in terms of the unknown "x" (y=2x+16)

we can therefore substitute the "y" in the second equation by "2x+16" and convert the equation into one that can be solved with only one unknown (x):

Now that we have the value for "x", we can use it in the first equation (the one we use as substitution) to find what y is:

Then, the pair: x = -4 and y = 8 is our solution. We write it in coordinate pair form as: (-4, 8)

  or  

step-by-step explanation:

if the four friends split the cost, p, of the pizza evenly, then each friend pays one-fourth of the cost of the pizza.

the expression is   or  

50-60=10

step-by-step explanation: