Slope-Intercept Form

Front

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

Back

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

Front

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

Back

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

Front

What does an undefined slope indicate about a line?

Back

An undefined slope indicates a vertical line.

Front

What does a slope of zero indicate about a line?

Back

A slope of zero indicates a horizontal line.

Front

If the slope of a line is positive, what does that tell you about the line's direction?

Back

The line rises from left to right.

Front

If the slope of a line is negative, what does that tell you about the line's direction?

Back

The line falls from left to right.

Front

What is the y-intercept in the equation y = mx + b?

Back

The y-intercept (b) is the point where the line crosses the y-axis.

Front

How would you write the equation of a line with a slope of 2 and a y-intercept of 4?

Back

y = 2x + 4.

Front

What is the slope of the line represented by the equation y = -3x + 5?

Back

The slope is -3.

Front

How do you determine if two lines are parallel using their slopes?

Back

Two lines are parallel if they have the same slope.