Question

the graph of linear function f passes through the point (1, -8) and has a slope of 2. what is the zero of f ?A) -2B) 5 C) 2D) -5

Answer 1

Goven,

The function is passes through point (1, -8).

The slope of the function is 2.

The standard equation of function is,

$(y-y_1)=m(x-x_1)$

Substituting the values then,

$\begin{gathered} (y-(-8))=2(x-1_{}) \\ y+8=2x-2 \\ y=2x-10 \end{gathered}$

To get the zeroes of the function take y = 0 then,

$\begin{gathered} 0=2x-10 \\ x=5 \end{gathered}$

Hence, the zeroes of the function is 5.