Distance and Midpoints (VCE SSCE Mathematical Methods): Quizzes

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Distance and Midpoints
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What process is used to find the midpoint of a line segment?

Averaging the coordinates

What is the midpoint formula for points A(x1,y1)A(x_1, y_1) and B(x2,y2)B(x_2, y_2)?

(x1+x22,y1+y22)\left(\frac{x_1+x_2}{2}, \frac{y_1+y_2}{2}\right)

For a vertical line segment, which coordinate remains constant?

The xx-coordinate

For a horizontal line from C(1,2)C(-1, 2) to D(3,2)D(3, 2), what is the midpoint?

(1,2)(1, 2)

What is the midpoint of the line segment joining A(2,6)A(2, 6) and B(3,4)B(-3, -4)?

(12,1)\left(-\frac{1}{2}, 1\right)

Which theorem is used to derive the distance formula?

Pythagoras' theorem

What is the distance formula for points A(x1,y1)A(x_1, y_1) and B(x2,y2)B(x_2, y_2)?

(x2x1)2+(y2y1)2\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

Calculate the distance from E(3,2)E(-3, 2) to F(4,2)F(4, -2).

65\sqrt{65}

What type of output does the midpoint formula give?

A point (ordered pair)

When calculating 4(3)4 - (-3) in the distance formula, what is the result?

77

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