Answer:
x = -2
Step-by-step explanation:
The formula for the axis of symmetry is;
x = -b/2a
In this case;
b = 4 , a = 1
Therefore;
x = -4/2(1)
= -2
Thus; the axis of symmetry is x = -2
Answer:
x = -2 is the axis of symmetry.
Step-by-step explanation:
We have given the function:
f(x)=x²+4x-19
We have to find the axis of symmetry.
We know that the formula for axis of symmetry is:
x = -b /2a
In this equation, b = 4 , a = 1
Putting these values we get,
x = -4/2(1)
x = -4/2
x = -2
x = -2 is the axis of symmetry of this function.
