Exercise 12

Are the equations below linear equations in one variable?

  1. \(-5-4y^{2}=-21\)

    • is

    • is not

    a linear equation in one variable.

  2. \(\sqrt{1-4.7x}=2\)

    • is

    • is not

    a linear equation in one variable.

  3. \(9q-y^{2}=1\)

    • is

    • is not

    a linear equation in one variable.

  4. \(2\pi r=12\pi\)

    • is

    • is not

    a linear equation in one variable.

  5. \(-r-11=3\)

    • is

    • is not

    a linear equation in one variable.

  6. \(6.6y=6\)

    • is

    • is not

    a linear equation in one variable.

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