Parallel and Perpendicular Lines

What is the slope of a line parallel to the line whose equation is: -2x + y = - 7?

• -2

• 1/2

• -1/2

• 2

Slopes of parallel lines are...

• opposite reciprocals.

• opposites.

• the same.

• always 7.

If the lines are parallel to each other and the slope of the blue is -1, what is the slope of the purple line?

• 1

• -1

• 5

• -3

Parallel lines have _________________ slope.

• The Same

• Opposite Reciprocal

Perpendicular lines have _________________ slope.

• The Same

• Opposite Reciprocal

Choose the linear equation that is parallel to the following line

Choose the linear equation that is perpendicular to the following line

Write the equation of a line perpendicular to y = 3x - 8 and that passes through the point (-3, -9)

• y + 9 = -1/3(x + 3)

• y - 9 = -1/3(x - 3)

• y + 9 = -3(x + 3)

• y - 9 = 3(x - 3)

Perpendicular lines have ________ slopes

• same

• opposite

• opposite reciprocal

• reciprocal