Alg 1 S1 Exam Review 24-25

Front

What is a function?

Back

A function is a relation where each input has exactly one output.

Front

How can you determine if a graph represents a function?

Back

Use the vertical line test: if a vertical line intersects the graph at more than one point, it is not a function.

Front

What is a linear inequality?

Back

A linear inequality is an inequality that involves a linear function, typically expressed in the form ax + by <, >, ≤, or ≥ c.

Front

Write the standard form of a linear inequality for the situation: The CRHS science department can spend no more than $2700 on textbooks, with Biology textbooks costing $57 each and Chemistry textbooks costing $72 each.

Back

57x + 72y ≤ 2700.

Front

What is the equation of a line in slope-intercept form?

Back

The equation of a line in slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept.

Front

What is an arithmetic sequence?

Back

An arithmetic sequence is a sequence of numbers in which the difference between consecutive terms is constant.

Front

Identify the common difference in the sequence: 3, 7, 11, 15,...

Back

The common difference is 4.

Front

What is the line of best fit?

Back

The line of best fit is a straight line that best represents the data on a scatter plot.

Front

How do you find the equation of the line of best fit?

Back

Use linear regression techniques to calculate the slope and y-intercept based on the data points.

Front

What does it mean for a graph to be 'not a function'?

Back

A graph is 'not a function' if there exists at least one input that corresponds to multiple outputs.