Equation from a graph

Front

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

Back

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

Front

What does 'm' represent in the equation y = mx + b?

Back

The slope of the line.

Front

What does 'b' represent in the equation y = mx + b?

Back

The y-intercept of the line.

Front

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

Back

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

Front

What is the slope of a line that rises from left to right?

Back

Positive.

Front

What is the slope of a line that falls from left to right?

Back

Negative.

Front

What is the slope of a horizontal line?

Back

Zero.

Front

What is the slope of a vertical line?

Back

Undefined.

Front

If the slope of a line is 2, what is the rise over run?

Back

Rise = 2, Run = 1.

Front

Write the equation of a line with a slope of -3 and a y-intercept of 4.

Back

y = -3x + 4.