Spiral Review Quiz A

Consider the graph of the equation y=2x. If a student writes an equation for a new line, and the new line intercepts the y axis at

(0, -5), which statement is true?

• The new equation is y = -3x because 2 + (-5) = -3.

• The new equation is y = 2x - 5 because the new line intercepts the y-axis at -5.

• The new equation is y = 2x + 5 because the new line intercepts the y-axis at 5.

• The new equation is y = 7x because 2 - (-5) = 7.

Points E, F, G and H lie on the same line. Which statement is true?

• The slope of EF is equal to the slope of GH because the ratio of the vertical change to the horizontal change between points E and F is equal to the ratio of the vertical change to the horizontal change between points G and H.

• The slope of EF is greater than the slope of GH because the ratio of the vertical change to the horizontal change between points E and F is greater than the ratio of the vertical change to the horizontal change between points G and H.

• The slope of EF is less than the slope of GH because the ratio of the vertical change to the horizontal change between points E and F is greater than the ratio of the vertical change to the horizontal change between points G and H.

• The slope of EF is less than the slope of GH because the ratio of the vertical change to the horizontal change between points E and F is less than the ratio of the vertical change to the horizontal change between points G and H.

Consider the equation. 0.5x + 5 = 4(x - 4) What is the solution to the equation?

• x = 3.5

• x = 4

• x = 5.5

• x = 6

Consider the table. Which values of w, x, y, and z complete the table correctly?

• w = 7 x 10^-4

  x = 0.009

  y = 3 x 10^2

  z = 60,000

• w = 7 x 10^-4

  x = 0.09

  y = 3 x 10^2

  z = 6,000

• w = 7 x 10^-5

  x = 0.009

  y = 3 x 10^2

  z = 6,000

• w = 7 x 10^-5

  x = 0.09

  y = 3 x 10^2

  z = 60,000

What is the solution to the equation 7.5x + 0.5 = (2/3)(6x - 15)?

• x = -3

• x = -3/4

• x = 4/3

• x = 4