algebra 1 STAAR review

Front

What is the formula for exponential growth?

Back

The formula for exponential growth is y = a(1 + r)^t, where 'a' is the initial amount, 'r' is the growth rate, and 't' is time.

Front

How do you find the zeros of a quadratic function?

Back

To find the zeros of a quadratic function, set the function equal to zero and solve for x using factoring, the quadratic formula, or completing the square.

Front

What is the difference between correlation and causation?

Back

Correlation indicates a relationship between two variables, while causation indicates that one variable directly affects the other.

Front

What does it mean for a function to have an initial amount?

Back

An initial amount is the starting value of a function before any growth or decay occurs, often represented as 'a' in the function y = a(1 + r)^t.

Front

How do you solve for a variable in an equation?

Back

To solve for a variable, isolate the variable on one side of the equation using inverse operations.

Front

What is the formula for calculating percentage increase?

Back

Percentage increase is calculated using the formula: ((new value - original value) / original value) * 100.

Front

What is a quadratic function?

Back

A quadratic function is a polynomial function of degree 2, typically in the form f(x) = ax^2 + bx + c.

Front

What does the term 'growth rate' refer to in mathematics?

Back

The growth rate refers to the percentage at which a quantity increases over a specific period of time.

Front

How do you express a percentage as a decimal?

Back

To express a percentage as a decimal, divide the percentage by 100.

Front

What is the significance of the vertex in a quadratic function?

Back

The vertex of a quadratic function represents the maximum or minimum point of the graph, depending on the direction of the parabola.