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    i have the equation y= -3 + 4 how do I plot that on a graph I dont understand how to , what coordinates are there
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    (Original post by Sunset12)
    i have the equation y= -3 + 4 how do I plot that on a graph I dont understand how to , what coordinates are there
    Do you mean y=-3x+4 or y= -3+4x?

    Assuming you don't mean y=-3+4
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    (Original post by Sunset12)
    i have the equation y= -3 + 4 how do I plot that on a graph I dont understand how to , what coordinates are there
    Are you missing an x? If you are not then it is y = 1 which is a horizontal line through the coordinate (0,1).

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    (Original post by Ben4)
    Are you missing an x? If you are not then it is y = 1 which is a horizontal line through the coordinate (0,1).

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    If that's the equation then the graph should look like that.


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    (Original post by Andy98)
    Do you mean y=-3x+4 or y= -3+4x?

    Assuming you don't mean y=-3+4
    Hey i mean Y = -3X + 4
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    (Original post by Waliid)
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    If that's the equation then the graph should look like that.


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    I mean Y = -3X + 4
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    (Original post by Sunset12)
    I mean Y = -3X + 4
    Plug in values of x at x=1,2
    e.g at x=1 Y = -3(1)+4 = 1 : plot point (1,1)
    at x=2 Y=-3(2)+4 =-2 : (2,-2)
    now just connect your two points and keep going, since it's a straight line you don't need any more points
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    (Original post by Sunset12)
    Hey i mean Y = -3X + 4
    There's a very simple trick to this. Have you ever seen y=mx+c before?
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    (Original post by Andy98)
    There's a very simple trick to this. Have you ever seen y=mx+c before?
    Yes I have heard of it I know that M is the gradient and C is the Y intercept but I don't know where to go from there
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    (Original post by Ben4)
    Are you missing an x? If you are not then it is y = 1 which is a horizontal line through the coordinate (0,1).

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    Hi I just had to say I am loving the mclovin pic, that is such as great movie
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    (Original post by Sunset12)
    Yes I have heard of it I know that M is the gradient and C is the Y intercept but I don't know where to go from there
    Yeah, so 4 is the y-intercept. Do you know how to work out the x-intercept? Think about what you have to substitute into y to find it.
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    (Original post by Sunset12)
    Yes I have heard of it I know that M is the gradient and C is the Y intercept but I don't know where to go from there
    In this case m=-3] and c=4

    Meaning the graph goes through the point (0,4) and goes 3 points down for every point to the right.
 
 
 
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