CASE TEST PREP

Front

What is the vertex of a parabola?

Back

The vertex is the highest or lowest point of a parabola, depending on its orientation. For a parabola that opens downwards, the vertex is a maximum point.

Front

What does the y-intercept of a graph represent?

Back

The y-intercept is the point where the graph intersects the y-axis, indicating the value of the function when x = 0.

Front

How do you determine the range of a quadratic function?

Back

The range of a quadratic function can be determined by identifying the vertex and the direction the parabola opens. If it opens upwards, the range is from the vertex value to infinity; if downwards, from negative infinity to the vertex value.

Front

What is a linear equation?

Back

A linear equation is an equation that represents a straight line when graphed. It can be written in the form y = mx + b, where m is the slope and b is the y-intercept.

Front

What is the formula for calculating the slope of a line?

Back

The slope (m) of a line is calculated using the formula m = (y2 - y1) / (x2 - x1), where (x1, y1) and (x2, y2) are two points on the line.

Front

What does it mean if a graph shows no correlation?

Back

No correlation means that there is no discernible relationship between the two variables being graphed; changes in one variable do not predict changes in the other.

Front

How do you solve a linear equation?

Back

To solve a linear equation, isolate the variable on one side of the equation using inverse operations, such as addition, subtraction, multiplication, or division.

Front

What is a cost function in a real-world scenario?

Back

A cost function represents the total cost incurred in a situation, often including fixed costs and variable costs based on usage or consumption.

Front

How do you calculate total earnings based on hourly rates?

Back

To calculate total earnings, multiply the number of hours worked at each rate by the respective rate, then sum the amounts.

Front

What is the significance of zeros in a function?

Back

Zeros of a function are the values of x for which the function equals zero. They represent the x-intercepts of the graph.