Algebra STAAR Practice

Front

What is a linear function?

Back

A linear function is a function that graphs to a straight line. It can be expressed in the form y = mx + b, where m is the slope and b is the y-intercept.

Front

How do you find the area of a rectangle?

Back

The area of a rectangle is found by multiplying its length by its width. Formula: Area = length × width.

Front

What does it mean for a function to be exponential?

Back

An exponential function is a mathematical function of the form f(x) = a * b^x, where a is a constant, b is a positive real number, and x is the exponent.

Front

What is the quadratic formula?

Back

Front

What is the range of a function?

Back

The range of a function is the set of all possible output values (y-values) that the function can produce.

Front

Back

To solve for x, take the square root of both sides: x - 16 = ±6. Thus, x = 16 ± 6, giving solutions x = 22 and x = 10.

Front

What is the relationship between width and length in a rectangle if the length is 8 ft greater than the width?

Back

If the width is w, then the length can be expressed as (w + 8) ft.

Front

What is the definition of a variable in algebra?

Back

A variable is a symbol, often represented by a letter, that stands for a number that can change or vary.

Front

What does it mean for an expression to be equivalent?

Back

Two expressions are equivalent if they have the same value for all values of the variables involved.

Front

Back

Using the laws of exponents, this simplifies to w^(5*(-4) + 21) = w^(21 - 20) = w.