Parallel Lines, Perpendicular Lines

Write an equation of a line that passes through the point (7,10) and is perpendicular to the line y = (1/2)x - 9

• y = -2x - 24

• y = -2x + 12

• y = -2x  + 24

• y = (1/2)x - 12

Write an equation of a line that passes through the point (-2,3) and is perpendicular to the line x = 4

• y = 3

• x = -3

• y = -3

• x = 3

What kind of intersecting lines are these?

• Parallel Lines

• Perpendicular Lines

• adjacent

• opposite

Line a passes through (2, 4) and (4, 7)

Line b passes through (-5, 3) and (-3, 6)

Lines a and b are ?

• Parallel

• Perpendicular

• Neither

Slopes of parallel lines are...

• opposite reciprocals.

• opposites.

• identical.

• always 7.

Slopes of perpendicular lines are...

• opposite reciprocals.

• opposites.

• identical.

• always 7.

y = 3x +2
y = 3x - 3
These lines are...

• Parallel

• Perpendicular

• Neither

• The same line

Line a passes through (0, 3) and (-4, 8) Line b passes through (0, 5) and (5,9) Lines a and b are ?

• Parallel

• Perpendicular

• Neither

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

• -2

• 1/2

• -1/2

• 2

Which of the following is perpendicular to 4x - 3y = 8?

• -4x - 3y = 8

• 6x + 8y = 9

• -8x + 12y = 7

• -8x + 6y = 5