Slope and Lines Retake

Front

What is the equation for a line with a slope of 9?

Back

y = 9x

Front

What indicates a non-proportional relationship in a graph?

Back

It does not go through the origin.

Front

Does a table showing a constant ratio represent a proportional relationship?

Back

Yes.

Front

What is the slope in the equation y = ½x?

Back

1/2

Front

What makes a graph proportional?

Back

A straight line that passes through (0,0).

Front

What is the slope of a line?

Back

The ratio of the rise (vertical change) to the run (horizontal change).

Front

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

Back

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

Front

What does a slope of 0 indicate about a line?

Back

The line is horizontal.

Front

What does a negative slope indicate about a line?

Back

The line decreases as it moves from left to right.

Front

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

Back

The value of y when x = 0.