Lord2clash
  • Lord2clash
can i get help with equations of lines. there will be a picture in the comments.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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Lord2clash
  • Lord2clash
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MrNood
  • MrNood
you have the equation y-4 = 3(x-1) the best way to start is to rewrite it so it looks like y= mx+b start by expanding the brackets then add 4 to each side write your new equation here...
Lord2clash
  • Lord2clash
@MrNood what exactly do you mean by expand the brackets?

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MrNood
  • MrNood
3(x-1) distribute the 3 by multiplying the terms inside the brackets this is a prerequisite of this question -
Lord2clash
  • Lord2clash
3x-(-3) ?
MrNood
  • MrNood
no
MrNood
  • MrNood
|dw:1449752285282:dw|
Lord2clash
  • Lord2clash
3x - 3
MrNood
  • MrNood
ok good so y-4 = 3x-3 now add 4 to each side of the equation
Lord2clash
  • Lord2clash
y = 3x-7
MrNood
  • MrNood
no you need to ADD 4 to each side
Lord2clash
  • Lord2clash
4 = 3x-1 (or is it +1?)
MrNood
  • MrNood
well - which is it?
Lord2clash
  • Lord2clash
i don't know i was asking you xD
MrNood
  • MrNood
you are way beyond the position of being expected to do this. what is 3x-3+4?
Lord2clash
  • Lord2clash
hey that was rude.... and 4x?
Lord2clash
  • Lord2clash
3x-3 = 0x+4 = 4x
MrNood
  • MrNood
lets go back y-4 = 3x-3 no add 4 to each side (just 4 NOT 4x)
Lord2clash
  • Lord2clash
y = 3x-1
MrNood
  • MrNood
that is not correct try again?
Lord2clash
  • Lord2clash
y = 3x+1 ?
MrNood
  • MrNood
ok - good so now you have rewrittenthe original equation to y = 3x+1 (it is the SAME equation - just re arranged) So you are studying straight line equations what do you know about the 'slope intercept' equation y=mx+b
MrNood
  • MrNood
|dw:1449753035173:dw|
Lord2clash
  • Lord2clash
the slope of the line is 3 and the y-intercept is 1 ...
MrNood
  • MrNood
excellent - so just looking at the graphs - which has an intyercept of +1? when you know - just check that it's slope is 3 then that is you answer
Lord2clash
  • Lord2clash
thank you.
MrNood
  • MrNood
NP and your answer is?
Lord2clash
  • Lord2clash
D.) was/is the answer and sorry for the late response i was finishing my work.

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