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Math Help - Straight line graph

  1. #1
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    Straight line graph

    On the grid, draw the straight lines

    y = 1, x = 2 and
    5x + 6y = 30
    I've got no idea what they want me to do here. You don't need to draw a graph, please just help explain it to me.

    Thanks
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  2. #2
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    Quote Originally Posted by yorkey View Post
    I've got no idea what they want me to do here. You don't need to draw a graph, please just help explain it to me.

    Thanks
    Hi yorkey,

    Let us take your first equation, y=1. That is whatever x value (independent variable) you choose the y value(dependent variable) is equal to 1. Hence you should get a line parrallel to the x axis as shown in the diagram below. Hope you understood. Now can you try to draw the next line.
    Attached Thumbnails Attached Thumbnails Straight line graph-sp.png  
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  3. #3
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    x=2 will be a vertical line coming down from 2?
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  4. #4
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    Quote Originally Posted by yorkey View Post
    x=2 will be a vertical line coming down from 2?
    Yes.

    (I strongly advise that you review your class notes or textbook for examples on how to draw lines).
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  5. #5
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    Two points determine a line.

    5x+ 6y= 0. When x= 0, what is y? When y= 0, what is x?

    Mark those two points and draw the line through them.
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