The graph of the function f(x) = (x – 4)(x + 1) is shown
below.

The last option

Step-by-step explanation:

Look at the attached picture. Always come in from the left. When you follow the graph, the Y values are decreasing until you get to the vertex (or Turning Point) which looks like it is approximately (1.5, -6.2) then the Y values begin to increase.

Decreasing: -infinity < x < 1.5

Increasing: 1.5 < x < infinity

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answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,