Information

Zero or root of the 1st degree function


It is called zero or root of the polynomial function of the first degree f (x) = ax + b, a0, the real number x such that f (x) = 0. We have:

f (x) = 0 Thex + b = 0

Let's look at some examples:

  1. Obtaining the zero of function f (x) = 2x - 5:
    f (x) = 0 2x - 5 = 0

  2. Calculation of the root of function g (x) = 3x + 6:
    g (x) = 0 3x + 6 = 0 x = -2

  3. Calculation of the abscissa of the point at which the graph of h (x) = -2x + 10 cuts the abscissa axis:

    The point at which the graph cuts the axis of x is one where h (x) = 0; So:
    H(x) = 0 -2x + 10 = 0 x = 5

Next: Ascending or Descending Function