Coordinate Geometry-Parallel/Perpendicular Equations

Front

What are the slopes of parallel lines?

Back

The slopes of parallel lines are the same.

Front

Write the equation of the line in Point-Slope form that goes through the point (10,5) and has a slope of -3.

Back

y - 5 = -3(x - 10)

Front

What are the slopes of perpendicular lines?

Back

The slopes of perpendicular lines are opposite reciprocals.

Front

What is the y-intercept of the equation y - 3 = 4(x - 0)?

Back

The y-intercept is 3.

Front

What type of slope is represented by a line that goes down from left to right?

Back

Negative slope.

Front

What is the slope of a line that is horizontal?

Back

The slope is zero.

Front

What is the slope of a line that is vertical?

Back

The slope is undefined.

Front

If two lines have slopes of 2 and -1/2, are they parallel, perpendicular, or neither?

Back

They are perpendicular.

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 Point-Slope form of a linear equation?

Back

Point-Slope form is y - y1 = m(x - x1), where m is the slope.