Algebra ll

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Across
  1. 1. The equation of a straight line in the form y = mx + b. M is the slope of the line and b is its y-intercept.
  2. 4. A sequence of non-zero numbers where each term after the first is found by multiplying the previous one by a fixed, non-zero number. The fixed non-zero number is called the common ratio.
  3. 6. A pair of angles that are formed by intersecting lines. They are opposite from each other and are congruent.
  4. 7. The side of a triangle that is opposite of the right angle in a right triangle. You can find this side using the pythagorean theorem.
  5. 11. The equation of a straight line in the form y − y1 = m(x − x1). M is the slope of the line and (x1, y1) are the coordinates of a given point on the line.
  6. 12. Has endless non-repeating digits to the right of the decimal point. Often expressed with a radical.
  7. 14. A linear equation in two variables is of the form Ax + By + C = 0. A and B are the coefficients, C is a constant term, and x and y are the two variables.
  8. 16. A form of writing a mathematical concept like an equation, number, or an expression in a form that follows rules. Expresses in the form ax+by=c.
  9. 17. A number without fractions. Must be positive with no decimal.
  10. 18. A way of expressing numbers that are too large or too small to be conveniently written in decimal form. Where a number is multiplied by 10 to the power of something.
  11. 19. Any number or expression raised to the power of zero. Will always equal 1.
  12. 20. Positive numbers we use when counting. Can also be zero.
Down
  1. 2. A formula used to find the hypotenuse of a right triangle. Expressed using the equation a2 + b2 = c2
  2. 3. The formula used to find the distance between two points. The formula is √[(x₂ - x₁)² + (y₂ - y₁)²].
  3. 5. A sequence where each term increases by adding/subtracting some constant. The constant is called the common difference.
  4. 8. The formula used to find the middle of two points. You can find this point by using the formula (x1 + x2)/2, (y1 + y2)/2.
  5. 9. A number that describes both the direction and the steepness of the line. Found using the equation m=(y2-y1)/(x2-x1).
  6. 10. Represents a portion of a whole. Also referred to as a ratio.
  7. 13. Straight lines that are always the same distance apart from each other. The lines will never touch each other even as they go on forever.
  8. 15. The distance a number is from 0 in the number line. Will always be a positive number.