Vertex=(0,0)
directrix is x=2.5
or x-2.5=0
so focus S is (-2.5,0)
let P(x,y)be any point on the parabola.
Let M be the foot of perpendicular from P(x,y) on the directrix.
then SP=PM


Missing details
Which type of function model would be appropriate for this situation?
Answer:
Linear function
Step-by-step explanation:
Given

Required
The function model
A function of the form:

is referred to as a linear function where


By comparison:

<em>So, it is a linear function (linear model)</em>
Correct good job that seem correct
Answer: <em>Yes</em>, a coefficient can have two variables.