Coordinate Plane and Slope

Front

What is the vertical number line in the coordinate plane called?

Back

y-axis

Front

How do you find the slope of a line?

Back

Slope (m) = (y2 - y1) / (x2 - x1), where (x1, y1) and (x2, y2) are two points on the line.

Front

How do you write an ordered pair?

Back

(X,Y)

Front

What is the horizontal number line in the coordinate plane called?

Back

x-axis

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 origin in the coordinate plane?

Back

The origin is the point (0,0) where the x-axis and y-axis intersect.

Front

What are the four quadrants in the coordinate plane?

Back

Quadrant I: (+,+), Quadrant II: (-,+), Quadrant III: (-,-), Quadrant IV: (+,-).

Front

How do you determine if a slope is steep?

Back

A slope is steep if its absolute value is greater than 1.

Front

What is the slope of a horizontal line?

Back

The slope of a horizontal line is 0.