How do you find the zero of $f (x) = 9 x + 5$ $f(x)=9x+5$ ?

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How do you find the zero of $f (x) = 9 x + 5$ $f(x)=9x+5$ ?

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Answer 1 · 2016-11-27T05:30:55

$x = - \frac{5}{9}$ $x=-5/9$

Explanation:

A zero of a function $f$ $f$ occurs whenever $f (x) = 0$ $f(x)=0$ . Here, since $f (x) = 9 x + 5$ $f(x)=9x+5$ , this means there is a zero when

$9 x + 5 = 0$ $9x+5=0$

Solving this yields

$9 x = - 5$ $9x=-5$

$x = - \frac{5}{9}$ $x=-5/9$

If we graph the linear function $f (x) = 5 x + 9$ $f(x)=5x+9$ , the graph should cross the $x$ $x$ -axis at $x = - \frac{5}{9}$ $x=-5/9$ , which is the point $(- \frac{5}{9}, 0)$ $(-5/9,0)$ .

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How do you find the zero of $f (x) = 9 x + 5$ $f(x)=9x+5$ ?

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How do you find the zero of $f (x) = 9 x + 5$ $f(x)=9x+5$ ?