EEITG11D Oral Quiz 3

Which of the following statements is false?

• The diagonals of a rhombus are perpendicular to each other.

• The diagonals of a rectangle are equal.

• The diagonals of a rhombus are equal

• The diagonals of a parallelogram bisect each other.

If the slopes of two lines are equal and their y-intercepts are different, then the lines are (a)   .

If b² – 4ac < 0, then the graph of y = ax² + bx + c _____.

• crosses the x-axis once

• crosses the x-axis twice

• does not cross the x-axis

• touches the x-axis once

The point of intersection of the altitudes of a triangle is called the (a)   .

The curve y = x³ is symmetric with respect to _____.

• the x-axis

• the y-axis

• the origin

• both axes

The point inside a triangle that is equidistant from its sides is called the (a)   .

If the eccentricity of a conic is 3/5, then it is a/an (a)   .

The equation of the directrix of the parabola x² =16y is (a)   .

The line segment which joins the midpoints of two sides of a triangle is parallel to the third side and is what part of the third side?

• one half

• one third

• one fourth

• two thirds

If two lines with slopes m₁ and m₂ are perpendicular to each other, then which of the following relations is true?

• m₁ = m₂

• m₁m₂ = -1

• m₁ / m₂ = -1

• m₁ - m₂ = -1