Algebra

• What is the Quadratic Formula for solving (ax^2 + bx + c = 0)?

  $x =$$\frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$
• What does the variable (a) represent in the Quadratic Formula?

  Coefficient of (x^2)
• How is the gradient of a straight line calculated?

  $m =$$\frac{\text{change in } y}{\text{change in } x}$
• What does the gradient (m) indicate in a straight line equation?


  It indicates the slope of the line
• What is the equation of a straight line?

  $y =$$mx +$$c$
• In the equation ( y=mx+c ), what does ( c ) represent?


  The y-intercept of the line
• How is the midpoint of a line segment calculated?

  $\text{Midpoint} =$$\left(\frac{x_1 + x_2}{2}, \frac{y_1 + y_2}{2}\right)$
• What does the midpoint of a line segment represent?


  The point halfway between two endpoints
• What is the Compound Interest Formula?

  $\text{Total accrued} =$$P \left(1 + \frac{r}{100}\right)^n$
• In the Compound Interest Formula, what does (P) represent?

  The principal amount
• What does \( r \) represent in the Compound Interest Formula?

  The interest rate per period
• What does \( n \) represent in the Compound Interest Formula?

  The number of periods
• How does the Compound Interest Formula differ from simple interest calculations?

  Compound interest accumulates on interest earned