Writing Linear Equations Review

Front

What is the slope?

Back

The slope (m) of a line represents the rate of change of the line. It is calculated as the rise over run, or the change in y divided by the change in x.

Front

In the equation 'y = mx + b', what does 'b' describe?

Back

'b' represents the y-intercept, which is the point where the line crosses the y-axis.

Front

Write the equation of the line containing (0,0) and (1,3).

Back

y = 3x + 0

Front

Write the equation of the line containing (-3,4) and (-1,-2).

Back

y = -3x - 5

Front

When given two points and asked to write an equation, what is your first step?

Back

Find the slope.

Front

What is the formula to calculate the slope between two points (x1, y1) and (x2, y2)?

Back

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

Front

What does a positive slope indicate about a line?

Back

A positive slope indicates that the line rises from left to right.

Front

What does a negative slope indicate about a line?

Back

A negative slope indicates that the line falls from left to right.

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.