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Mathematics 18 Online
OpenStudy (anonymous):

@bloomlocke367

OpenStudy (anonymous):

question 2 Two lines, C and D, are represented by the equations given below: Line C: y = x + 14 Line D: y = 3x + 2 Which of the following shows the solution to the system of equations and explains why? (6, 20), because both lines pass through this point (6, 20), because the point does not lie on any axis (3, 11), because one of the lines passes through this point (3, 11), because the point lies between the two axes Question 11 (Multiple Choice Worth 5 points)

OpenStudy (anonymous):

do we use a graph for this one?

OpenStudy (bloomlocke367):

okay, we can do this by substitution too. do you remember what we did? and a graph works too, if you'd rather do that.

OpenStudy (anonymous):

substitution

OpenStudy (anonymous):

yup

OpenStudy (anonymous):

i remember

OpenStudy (bloomlocke367):

so you want to use substitution?

OpenStudy (anonymous):

whichever is the best way of doing it

OpenStudy (anonymous):

would substitution be the best way to do it

OpenStudy (bloomlocke367):

well graphing is easy if you have a graphing calculator

OpenStudy (anonymous):

http://www.wolframalpha.com/

OpenStudy (anonymous):

it graph what you want it to graph

OpenStudy (anonymous):

are you still there

OpenStudy (bloomlocke367):

yeah, hang on

OpenStudy (anonymous):

k soory

OpenStudy (bloomlocke367):

I have a better graph for you.

OpenStudy (bloomlocke367):

http://prntscr.com/72jupa where do the lines intercept?

OpenStudy (bloomlocke367):

@hockeybeast10

OpenStudy (anonymous):

okay thats awesome. now what do we do

OpenStudy (bloomlocke367):

find where the lines intercept each other

OpenStudy (anonymous):

how do i read this graph

OpenStudy (anonymous):

its weird it just skips numbers

OpenStudy (bloomlocke367):

what do you mean it skips numbers?

OpenStudy (anonymous):

it goes from 0,2,4,6,8 10 its missing a line

OpenStudy (bloomlocke367):

no, the scale is just slightly different.

OpenStudy (anonymous):

okay how do i use it?

OpenStudy (bloomlocke367):

it's 2.5

OpenStudy (anonymous):

5,20

OpenStudy (bloomlocke367):

not by 2's

OpenStudy (anonymous):

?

OpenStudy (bloomlocke367):

close, it's 6,20

OpenStudy (anonymous):

so the answer is b

OpenStudy (anonymous):

okay thank you. can we do one more and i will be out of your hair!?!☺

OpenStudy (bloomlocke367):

actually, the answer's a...

OpenStudy (anonymous):

the answers are backwards for some reason

OpenStudy (bloomlocke367):

oh, okay

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