Warmup 12/9

Front

What is the y-intercept in the equation y = -2x + 5?

Back

The y-intercept is the point where the line crosses the y-axis. In this equation, the y-intercept is 5.

Front

What does it mean if a slope is undefined?

Back

An undefined slope occurs when a line is vertical, meaning it does not have a defined rise over run.

Front

How do you calculate the slope between two points?

Back

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

Front

What type of slope does a line with a positive slope have?

Back

A positive slope means that as x increases, y also increases, resulting in an upward trend.

Front

What type of slope does a line with a negative slope have?

Back

A negative slope means that as x increases, y decreases, resulting in a downward trend.

Front

What is the slope of a horizontal line?

Back

The slope of a horizontal line is 0.

Front

What is the slope of a vertical line?

Back

The slope of a vertical line is undefined.

Front

If a line passes through the points (2, 3) and (5, 11), what is the slope?

Back

The slope is (11 - 3) / (5 - 2) = 8 / 3.

Front

What does a slope of -3 indicate about a line?

Back

A slope of -3 indicates that for every 1 unit increase in x, y decreases by 3 units.

Front

What is the formula for the slope-intercept form of a line?

Back

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