Semester 1 Final Exam Review Topic 3 and Topic 4 -Part 2

Front

Is the relation a function? (1,3), (3,7), (5,11), (7,15), (9,19)

Back

Yes, each input (x-value) has a unique output (y-value).

Front

What is the inequality that models the graph where y is less than the line with slope 1/2 and y-intercept -4?

Back

Front

What does it mean for a line to be an accurate line estimate of best fit for data?

Back

It means the line closely represents the trend of the data points.

Front

Which system of inequalities matches the graph: y > 2x - 4 and y < 2?

Back

This system describes a region above the line y = 2x - 4 and below the line y = 2.

Front

What is the solution to the system of equations: 4x + y = 6 and x - 2y = 6?

Back

The solution is (2, -2).

Front

Define a function in mathematics.

Back

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

Front

What is a linear inequality?

Back

A linear inequality is an inequality that involves a linear function.

Front

How do you determine if a relation is a function using a graph?

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 the slope-intercept form of a linear equation?

Back

Front

What does the y-intercept represent in a linear equation?

Back

The y-intercept is the point where the line crosses the y-axis (x=0).