EXPAND-x^{2} +-8x+-7x+56
SIMPLIFY- x^{2} +15x+56
Therefore, the first number in an ordered pair is a value for x, and the second number is a value for y. These numbers are called the x- and y-coordinates.
Answer:
true
Step-by-step explanation:
|-3.9|+|3.9| = 3.9+3.9 = 7.8