QUIZ NO. 2 - SLOPES AND LINES

Which of the following pair of lines containing pairs of points are perpendicular?

• L1 has (-4, 1) and (-1, -2) ; L2 has (-3, 4) and (3, -2)
• L1 has (4, 3) and (1, -2) ; L2 has (1, 2) and (-4, 5)
• L1 has (2, -1) and (-3, -3) ; L2 has (3, -2) and (-2, -4)

Find the slope of the equation x+3y-18=0 .

• 1/3
• 3
• -3
• -1/3

Find the y-intercept of the equation x+3y-18=0 .

• 3
• -6
• -3
• 6

Determine the equation of the line passing through the two points. P1 (7,1) and P2 (3,4)

• 3x - 4y + 17 = 0
• -3x + 4y -17 = 0
• 3x - 4y -17 = 0

What is the line description of an equation with a negative slope?

• rising
• falling
• horizontal
• vertical

If the angle of inclination is equal to 90 degrees, then the line is ________________.

• rising
• falling
• horizontal
• vertical

What is the slope-intercept form?

• y = b + mx
• x = my + b
• y = mx + b
• y = mx - b

When the two lines have the same slope, the lines are _______________.

• parallel
• perpendicular
• intersecting

Wen lines are perpendicular, the angle between them is _______________.

• more than zero degree but less than ninety degree
• exactly ninety degree
• more than ninety degree but less than one hundred eighty degree
• exactly one hundred eighty degree

If the angle of inclination is 90 degree, then the value of tangent is _________________.

• zero
• positive
• undefined
• negative