Answer:
4 ssquare units
Step-by-step explanation:
Answer: Because the y terms cancel
Step-by-step explanation:
Hi, this approach is called the addition method.
By adding both equations we can cancel one term that contains one variable, and calculate the remaining variable.
For example, in this case:
8x + 3y = 27
+
4x-3y = 9
_______
12x = 36
Now, we can solve for x:
x = 36/12
x = 3
Now, simple replace the value of x in any equation to obtain the value of y:
4x-3y = 9
4(3)-3y =9
12-3y =9
12-9 = 3y
3 =3y
3/3 =y
y=1
-2 and 6, because they add to make 4 and multiply to make -12
Because of the "x-5" in the absolute value, the pieces will separate at x=5, because that's where x-5 = 0.
(This knocks out answer #1, 3, and 4)
To confirm option #2 is correct:
If you pick a number greater than 5, the absolute value doesn't do anything, so
if x > 5, a(x) = (x-5) + 1
If you pick a number less than 5, "x-5" is negative and the absolute value gives you the opposite of that value:
if x < 5, a(x) = - (x-5) +1
The answer is the second option.