Grade 9 Math (2)

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Across
  1. 3. _______ holidays!
  2. 6. if the radius of a square is multiplied by four, the area is multiplied by _______
  3. 8. the number set that pi belongs in
  4. 9. the sum of all numbers divided by the number of numbers
Down
  1. 1. the y-intercept of y = 7x + 3
  2. 2. the direction of correlation between hours of sleep and how awake a student is in class
  3. 4. the value of x, given (x + 3)squared is 49
  4. 5. the sum of 1/2 + 1/3 + 1/6
  5. 7. the slope of the line perpendicular to y = -0.1x + 2