Sample quiz on representation of linear relations
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  1. Relations can be represented by $\cdots$
    all of the above
  2. In a table of values for a linear relation $\cdots$
    the first differences are constant
    the first differences are equal to zero
    the second differences are constant
    the second differences are equal to zero
  3. The graph of a linear relation is $\cdots$
    a curve
    a parabola
    a straight line
    a horizontal line
  4. In an equation of a linear relation, the (positive integer) exponents on $x$ and $y\quad \cdots$
    should both be zero
    should both be one
    should both be at least one
    should both be at most one
  5. Which of the equations below represent a linear relation?
  6. If the equation $y=3x^{k}-12$ is to represent a linear relation, what value should $k$ take?
  7. For what value of $k$ is the relation $y=2x^{2}+k$ a linear relation?
    no value of $k$
    all values of $k$
  8. Which of the following is not a linear relation?
  9. The first differences from a table of values of a linear relation are always constant. In addition:
    they can be positive or negative
    they are always positive
    they are always negative
    they are always zero.
  10. If the first differences for a linear relation is zero, then:
    the graph will be vertical
    the graph will be horizontal
    the graph will make angle $45^{\circ}$ with the $x$-axis
    the graph will make angle $90^{\circ}$ with the $x$-axis