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Unit 2 Review Algebra 1

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  • Write the line in slope - intercept form: m = undefined, through (-3, 9)
    x = -3
  • Find the slope between (4, 3) and (5, 2)
    -1
  • Write the line in slope - intercept form: m = 5, b = -9
    y = 5x-9
  • Graph the inequality: y < -1/3 x + 7
    dashed line, negative slope, crosses at 7
  • Write the line in slope - intercept form: m = -1/7 b = 5
    y = -1/7x +5
  • What is the x intercept? y = 4x -12
    (3, 0)
  • Graph the line: x = 2
    Vertical line
  • Write the line in slope - intercept form: through (1, 5) and ( 6, 25)
    y = 4x +1
  • Graph the line: y = -3
    horizontal line at y = -3
  • Write the line in slope - intercept form: m = -2, and through (0,9)
    y = -2x + 9
  • The temperature will be at least 50 degrees.
    t >/= 50
  • Write the line in slope - intercept form: perpendicular to y = -4x - 11 through (0,8)
    y = 1/4x + 8
  • Write the line in slope - intercept form: parallel to y = -2x + 7 through (0,8)
    y = -2x +8
  • Find the slope: (-2, 6) and (4, 6)
    zero
  • Solve: x - 5 > - 3
    open dot on 2, shaded to the right x > 2
  • What is the y - intercept? y = 4x -12
    (0, -12)
  • Find the slope: (3, 9) and (3, -5)
    undefined
  • Graph the line: y = 2/5 x -1
    see graph
  • - 5 < x - 3 < 1
    -2 < x < 4 (open dots, shaded between)
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