TSI Math Review

Front

What is the formula to calculate the average of a set of numbers?

Back

Average = (Sum of all values) / (Number of values)

Front

How do you calculate simple interest?

Back

Simple Interest = Principal × Rate × Time

Front

If y = x/2, what is the value of y when x = -2?

Back

y = -1

Front

What are the solutions of the equation x^2 - 2x - 3 = 0?

Back

x = 3 and x = -1

Front

What is the vertex form of a quadratic function?

Back

Vertex form: f(x) = a(x-h)^2 + k, where (h,k) is the vertex.

Front

What does it mean for a function to be even?

Back

A function is even if f(x) = f(-x) for all x in the domain.

Front

What is the quadratic formula?

Back

x = (-b ± √(b² - 4ac)) / (2a) for the equation ax² + bx + c = 0.

Front

How do you find the maximum or minimum value of a quadratic function?

Back

Use the vertex form or find the vertex using x = -b/(2a).

Front

What is the relationship between the roots and coefficients of a polynomial?

Back

For a quadratic ax² + bx + c = 0, the sum of roots = -b/a and product of roots = c/a.

Front

What is the difference between a rational and an irrational number?

Back

Rational numbers can be expressed as a fraction, while irrational numbers cannot.