Fall Semester Algebra Exam Part I

Which graph represents a function?

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• 2x + y = 4

• 2x - y = -4

• x + 2y = 8

• x - 2y = -8

• y = x

• y = -x

• y = x - 1

• y = x + 1

• y = -2x + 4

• y = -2x + 11

• y = - $\frac{1}{2}$ x - 4

• y = - $\frac{1}{2}$ x + 2

• y = $\frac{2}{3}x\ +\ 1$

• y = $-\frac{2}{3}x\ +\ 5$

• $y\ =\ \frac{2}{3}x\ +\ 9$

• $y\ =\ -\frac{2}{3}x\ +9$

• y = x - 3

• y = 3x + 1

• y = 3x

• y = 3x -6

• It has a positive slope.

• The x-intercept is 3.

• The y-intercept is 1.

• It passes through the point (-1,2).

• 2

• 5

• 10

• -10

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  $y=\frac{1}{3}x-2$
  

• $y=3x-2$

• $y=-\frac{1}{3}x-2$

• $y=-3x-2$

• y = 4x

• x = 4

• y = 4

• y = x + 4