contestada


Choose the equation that represents the graph below:

Graph of a line passing through points 0 comma 4 and 3 comma 0
y = −three fourthsx + 4 y = −four thirdsx + 4 y = three fourthsx − 4 y = 4 thirdsx − 4




Question 23 (Multiple Choice Worth 1 points)


(03.07 LC)

Identify the slope of the line shown in the graph below:

Graph of a vertical line with an x intercept of negative 1
slope = –1 slope = 0 slope = undefined slope = 1




Question 24 (Fill-In-The-Blank Worth 1 points)


(03.05 LC)

The graph below plots a function f(x):

graph of line segment going through ordered pairs 0, 100 and 3, 220

If x represents time, the average rate of change of the function f(x) in the first three seconds is ___.

Answer for Blank 1:



You must check the box below prior to submitting your exam!
Check this box to indicate you are ready to submit your exam







Current course: 3067 4077

Instructors monitor ALL areas of a student's account


Student e-mail accounts are to be used for FLVS course-related email only and not for general introductions or spamming of people in your address book.

Please remember to click the Logoff link when you have completed your work in the course.



--------------------------------------------------------------------------------

Related Help Center Topics

Taking Exams
Proctored Exams
Question Types








Florida Virtual School










Respuesta :

nobillionaireNobley
Line passing through (0, 4) and (3, 0); slope = -4/3 and y-intercept is 4. Therefore the equation is given by [tex]y=- \frac{4}{3} x+4[/tex]

The correct answers are:

y = -4/3x + 4; undefined; and 40

Explanation:

The equation of a line can be represented in slope-intercept form, y=mx+b.  The slope is represented as m and the y-intercept as b.  The formula for slope is

m = (y₂-y₁)/(x₂-x₁)

Using our points, we have m = (0-4)/(3-0) = -4/3.

The y-intercept is where the data crosses the y-axis; this means it will have an x-coordinate of 0.  This makes the first point our y-intercept.  This gives us the equation y = -4/3x + 4.

The slope of a vertical line is undefined.  This is because it is the change in y over the change in x; since the x-value does not change, this will be 0, which means we are dividing by 0, which is undefined.

The rate of change is the same thing as slope:

m = (y₂-y₁)/(x₂-x₁) = (220-100)/(3-0) = 120/3 = 40

Otras preguntas