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Mathematics 9 Online
OpenStudy (anonymous):

http://media.apexlearning.com/Images/200708/27/2e4ebeb7-1685-420b-b9b1-0454d9747e32.gif i need help with 7 questions The points plotted below are on the graph of a polynomial. Which of the following x-values is the best approximation of a root of the polynomial? Check all that apply. A. x = 6 B. x = -1.1 C. x = 1 D. x = -1.7 E. x = 4.3 F. x = 2.4

OpenStudy (triciaal):

the roots of the polynomial means what are the values of x when y = 0

OpenStudy (triciaal):

where does the graph cross the x-axis?

OpenStudy (anonymous):

is one of them 6 and -1.1?

OpenStudy (triciaal):

hint check all that apply more than one place

OpenStudy (triciaal):

yes

OpenStudy (triciaal):

what about 2?

OpenStudy (anonymous):

there is no 2 only 2.4

OpenStudy (anonymous):

what about 1 ?

OpenStudy (triciaal):

i would put 2,4 remember the polynomial is a continuous line cross it with the x-axis and read the points of intersection

OpenStudy (anonymous):

should -1.7 be also one of them since the dot is in -1.1 ?

OpenStudy (triciaal):

not to me -1.7 would be very close to -2 the line crosses just past -1 so the root is -1.1

OpenStudy (anonymous):

4.3 would not be one of the roots because there nothing between there am i correct ?

OpenStudy (anonymous):

so far my answers would be 6 , -1.1, and 2.4 correct

OpenStudy (triciaal):

the roots are the x points where the graph touches the x-axis

OpenStudy (triciaal):

yes

OpenStudy (anonymous):

okay thank you for that question

OpenStudy (anonymous):

i have a problem that i need help in

OpenStudy (anonymous):

i have a problem that i need help in

OpenStudy (triciaal):

if the others are similar you should be able to do them now that you know what to look for

OpenStudy (triciaal):

open a new question

OpenStudy (anonymous):

file:///Users/picazo/Desktop/39f40799-6859-419d-81d9-d4152447d85e.gif for this one i know its the same rules that apply

OpenStudy (anonymous):

OpenStudy (anonymous):

A. x = -1.1 B. x = -2 C. x = 4.1 D. x = 2.4 E. x = 1.1 F. x = 0.8

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