How to calculate variance from standard deviation.

12. decide whether each statement is always true, sometimes true, or never true. a. when corresponding points of an original figure and its reflection are connected, the resulting segments are all perpendicular to the line of reflection. b. when a point is reflected over a horizontal line, the y-coordinate of the point stays the same. answer both questions and explain

Find the slope and the y-intercept if there's one and the equation of the line given these two points( 3, 2) and( 3, -4)

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