Equation of a Line from a Graph

Front

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

Back

The slope of the line.

Front

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

Back

The y-intercept of the line.

Front

Write the equation of a line with a slope of 3 and a y-intercept of 2.

Back

y = 3x + 2

Front

Write the equation of a line with a slope of 2/3 and a y-intercept of 1.

Back

y = 2/3x + 1

Front

What is the slope of the line represented by the equation y = -1/3x - 2?

Back

-1/3

Front

What is the y-intercept of the line represented by the equation y = 3x - 2?

Back

-2

Front

If a line has a slope of -3, what is the equation of the line if it passes through the point (0, 2)?

Back

y = -3x + 2

Front

How do you find the slope of a line given two points (x1, y1) and (x2, y2)?

Back

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

Front

What is the general form of the equation of a line?

Back

y = mx + b.

Front

If the slope of a line is 0, what does that indicate about the line?

Back

The line is horizontal.