Algebra 1 9-Weeks Test Review

Front

What is the definition of a function in algebra?

Back

A function is a relation that assigns exactly one output for each input from its domain.

Front

What does f(x) = x + 3 represent?

Back

This is a linear function where the slope is 1 and the y-intercept is 3.

Front

How do you find the value of a function at a specific point?

Back

Substitute the specific value into the function's equation.

Front

What is the formula for the perimeter of a rectangle?

Back

Perimeter = 2(Length + Width).

Front

If the length of a rectangle is represented as (4x + 8) and the width as (2x + 3), how do you express the perimeter?

Back

Perimeter = 2((4x + 8) + (2x + 3)) = 12x + 22.

Front

What is the rate of change in a linear function?

Back

The rate of change is the slope of the line, calculated as the change in y over the change in x.

Front

How do you solve for x in an inequality?

Back

Isolate x on one side of the inequality using inverse operations.

Front

What does it mean if a function is increasing?

Back

A function is increasing if, as x increases, f(x) also increases.

Front

What is the solution to the equation f(x) = -7(-2 + x) when x = -2?

Back

f(-2) = -7(-2 - 2) = 28.

Front

What is the significance of the y-intercept in a linear function?

Back

The y-intercept is the point where the line crosses the y-axis, representing the output when x = 0.