4.2-4.4 Review

Front

What is the equation of a horizontal line?

Back

y = k, where k is a constant.

Front

What is the slope of a line represented by the equation y = mx + b?

Back

The slope is represented by 'm'.

Front

What does a slope of 0 indicate about a line?

Back

The line is horizontal.

Front

How do you find the slope between two points (x1, y1) and (x2, y2)?

Back

Slope (m) = (y2 - y1) / (x2 - x1).

Front

What are the x-intercept and y-intercept of a line?

Back

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

Front

What is the slope of a vertical line?

Back

The slope is undefined.

Front

How do you determine the x-intercept of the equation 3x - 2y = 12?

Back

Set y = 0 and solve for x: x = 4.

Front

How do you determine the y-intercept of the equation 3x - 2y = 12?

Back

Set x = 0 and solve for y: y = -6.

Front

What is the slope of the line represented by the equation y = 4x + 1?

Back

The slope is 4.

Front

What does a negative slope indicate about a line?

Back

The line decreases as it moves from left to right.