Harini5721
24.07.2019 •
Mathematics
Y=1/3x-2 what is the slope ans the y-intercept
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Ответ:
Ответ:
Part A)
Part B) The x-intercepts are the points (-2.5,0) and (0.5,0)
Part C) see the explanation
Part D) The graph in the attached figure
Step-by-step explanation:
we have
Part A: Completely factor
Factor 4 leading coefficient
Complete the square
Rewrite as perfect squares
Part B: What are the x-intercepts of the graph of f(x)?
we know that
The x-intercepts are the values of x when the value of the function is equal to zero
we have
For f(x)=0
Move the constant to the right side
take the square root both sides
The x-intercepts are the points (-2.5,0) and (0.5,0)
Part C: Describe the end behavior of the graph of f(x)
we have
This is the equation of a vertical parabola in vertex form
The parabola open upward
The vertex represent a minimum
The vertex is the point (-1,-9)
The function is decreasing in the interval (-∞,-1)
The function is increasing in the interval (-1,∞)
The domain is the interval (-∞,∞)
The range is the interval [-9,∞)
Part D: What are the steps you would use to graph f(x)?
step 1
Plot the vertex
The vertex is the point (-1,-9)
step 2
Plot the y-intercept
The y-intercept is the value of the function when the value of x is equal to zero
For x=0
The y-intercept is the point (0,-5)
step 3
Plot the x-intercepts
The x-intercepts are the points (-2.5,0) and (0.5,0)
using a graphing tool
join the points to graph the parabola
see the attached figure