anonymous
  • anonymous
need help
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
1 Attachment
anonymous
  • anonymous
@welshfella can you help me ?
welshfella
  • welshfella
sorry that diagrams too small for my old eyes!!

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anonymous
  • anonymous
i can make it bigger
anonymous
  • anonymous
1 Attachment
anonymous
  • anonymous
is that better
welshfella
  • welshfella
yes just about one of the general form s of an equation of a straight line is y = mx + b where m = slope and b = intercept on y axis so an equation with slope 2 and y-intercept -2 would be y = 2x - 2
welshfella
  • welshfella
these 2 lines on your graph are parallel so they have the same slope If you count the squares vertically and horizontally form the same points you can find the slope
welshfella
  • welshfella
|dw:1433104007663:dw|
welshfella
  • welshfella
slope (m) = RISE/RUN b = y intercept
anonymous
  • anonymous
i still dont get it
welshfella
  • welshfella
Look at the top point of the blue line and count the number of squares until you get to the horizontal x-axis then count squares to the left until you come to point where the blue line cuts the x axis what counts do you get ?
anonymous
  • anonymous
6,2
welshfella
  • welshfella
|dw:1433104418815:dw|
welshfella
  • welshfella
6 is right - not 2
anonymous
  • anonymous
3
welshfella
  • welshfella
yep so the slope = 6/3 = 2
welshfella
  • welshfella
and where do the lines cut the y axis -at what value of y?
welshfella
  • welshfella
|dw:1433104647687:dw|
anonymous
  • anonymous
1,3
welshfella
  • welshfella
not 1 and 3 - they are below the 0 point
anonymous
  • anonymous
-1.-3
welshfella
  • welshfella
- on negative part of the y-axis
welshfella
  • welshfella
yes so the 2 equations are y = 2x - 1 and y = 2x - 3
welshfella
  • welshfella
I know they are not written in the same form as the above - which ones are they in the options?
anonymous
  • anonymous
could you hep with this one
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welshfella
  • welshfella
no i gotta go right now - the correct equations for the last question are the first and second on the list

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