What is the axis of symmetry of the following function?
f(x) = х^2— 3x — 9

x=1.5

Step-by-step explanation: The equation is in In a standard form of equation as;

y = ax^2 + bx + c, and therefore, the axis of symmetry is given by the formula,

X = - b / 2a.

Therefore using that in the question, a = 1 and b= - 3.

Therefore, the axis of symmetry is:

x = - (-3) / 2(1) which gives

x = 3/2 or x=1.5

Putting money in a bank and earning interest

Step-by-step explanation:

This problem can be used in real life to describe when you put money in a bank, in this case, it could be two dollars, and leave it there for x amount of years, then taking it out after an amount of years and checking what you have. Since this is a linear equation, your money doesn't go up exponentially. It'll keep going up the same rate for the whole time until you decide to take it out. Here's an example of what it'll look like, if it helps:

Your money keeps going up. Hope this helps!