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math

posted by on .

Okay. so say their is a list of numbers:

x y
0 3
1 5
2 7
3 9
4 11

I know how to answer a question like "use an equation to figure out Y when X is..." but how do you figure do " figure out X when Y is" ?
I konw that the formula is y=mx+b
but i don't know how to do it

thanks

  • math - ,

    m equals the change in y for each change in x. As I see the data, y changes 2 for each unit x changes. M=2

    b is what y is when x is zero. Get that from the table.

  • math - ,

    oohh okay.
    thanks

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