Exploring Parallel and Perpendicular Lines in TEKS 2F(S)

What symbol is used to represent parallel lines in mathematics?

• An upside down T

• Two slanted lines

• A pair of crossed lines

• A single vertical line

What does it mean if two lines are perpendicular?

• They have the same slope

• They are always horizontal

• They intersect at one point

• They never intersect

What is the slope of a line perpendicular to a line with slope 2?

• -1/2

• -2

• 1/2

• 2

If a line has a slope of -3, what is the slope of a parallel line?

• -3

• 3

• -1/3

• 1/3

If two lines are parallel, what can be said about their slopes?

• They are unequal

• They are equal

• They are negative reciprocals

• They are reciprocals

What is the slope of a line perpendicular to y = -3x + 5?

• 3

• 1/3

• -1/3

• -3

Using the point-slope formula, what is the first step to find the equation of a line perpendicular to y = 2x + 3 that passes through (2, 3)?

• Substitute the slope and point into the formula

• Distribute the slope in the formula

• Flip the slope of the given line

• Find the perpendicular slope

What is the correct slope-intercept form of a line perpendicular to y = 2x + 3 through the point (2, 3)?

• y = 2x - 1

• y = -2x + 7

• y = 1/2x + 1

• y = -1/2x + 4

What is the slope of a line perpendicular to a line with slope 1/2?

• -1/2

• 2

• 1/2

• -2

For a line parallel to y = -3x + 5 through the point (0, -4), what is the y-intercept of the line?

• -3

• -4

• 0

• 5