CFA#2 - POST TEST

Front

What is a function in mathematics?

Back

A function is a relation between a set of inputs and a set of possible outputs where each input is related to exactly one output.

Front

How can you determine if a graph represents y as a function of x?

Back

A graph represents y as a function of x if any vertical line drawn through the graph intersects it at most once.

Front

What is a proportional relationship?

Back

A proportional relationship is a relationship between two quantities where their ratio is constant.

Front

Write an equation for a scenario where a person watches videos for a certain number of hours each day. If they watch 4.5 hours per day, what is the equation?

Back

y = 4.5x, where y is the total hours watched and x is the number of days.

Front

What does the notation 8.4C refer to in mathematics?

Back

8.4C refers to a specific standard in the Texas Essential Knowledge and Skills (TEKS) curriculum.

Front

What does the notation 8.4B refer to in mathematics?

Back

8.4B refers to a specific standard in the Texas Essential Knowledge and Skills (TEKS) curriculum.

Front

What is the difference between a linear function and a non-linear function?

Back

A linear function has a constant rate of change and can be represented by a straight line, while a non-linear function does not have a constant rate of change and is represented by a curve.

Front

What is the slope-intercept form of a linear equation?

Back

The slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept.

Front

How do you find the slope of a line given two points?

Back

The slope (m) is calculated using the formula m = (y2 - y1) / (x2 - x1).

Front

What is the y-intercept of a graph?

Back

The y-intercept is the point where the graph intersects the y-axis, represented as (0, b) in the equation y = mx + b.