-3x + 4y = -2 6x - y = 11 What is the value of the x-coordinate?
2 answers:
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Answer:
Option A.
Step-by-step explanation:
Let
t ------> the number of additional toppings
c ----> the cost of the pizza in dollars
we know that
The linear equation that represent this situation is
This is the equation of the line in slope intercept form
where
the slope m is equal to
the y-intercept b is equal to
-----> the cost of a pizza without topping
First thing to do is to move the constant over to the other side of the equals sign. Then we will complete the square on the x terms. We will take half the linear term, square it, then add it to both sides. Our linear term is 4. Half of 4 is 2, and 2 squared is 4. 
. In the process of completing the square we have created a perfect square binomial on the left which is 
. A is our answer.