Answer:
a+b+c=180
Step-by-step explanation:
If you already have the first 2 values, add them together and subtract that number from 180. The total of all angles added together should always equal 180.
Answer:
a = -1
Step-by-step explanation:
The line of symmetry for the parabola given by ...
y = ax² +bx +c
is
x = -b/(2a)
Using the given values, we have ...
-2 = -(-4)/(2a)
Multiplying by -a/2, we get ...
a = (4/2)(-1/2) = -1
The value of "a" is -1.
Y = 1x + 2 is the answer therefore the missing number is 1,2