Answer:
x = 0
y = -4
negative 4 cuz the line goes down, meaning it's negative
Answer:

Step-by-step explanation:

Let's solve one of them for x.

Add 4

Divide by 3.

Now, plug the value of y in the formula, or you can plug the value of x in the other equation. I'll take this one.




Multiply by 3 to get rid of the denominator.

add x

Combine like terms;

Divide by 4.

Simplify.

Now that you found the value of x, replace it in any of the equations to find y.


Proof:




The surface area is 253.5 but Im not sure
By knowing the volume of a triangle and that the triangle has all equal sides
(40+41+41+45+48+48+49+49+49+40)/10 = 460/10 = 46
mean = 46