<u>Given two points:</u> A = (x₁,y₁) = (-3,5) A' = (x₂,y₂) = (2,-5)
<u>Find the midpoint of point A and point A'</u> The midpoint of the two points lies on the reflection line. You can find the midpoint by this following formula x midpoint = y midpoint =
Plug in the numbers x midpoint = x midpoint = x midpoint = -0.5
y midpoint = y midpoint = y midpoint = 0
The midpoint is (x,y) = (-0.5, 0)
<u>Find the slope of the line passes through (-3,5) and (2,-5)</u> Use this following formula to find the slope m =
Plug in the numbers m = m = m = -10/5 m = -2
<u>Find the slope of the line which is perpendicular to the line that passes through (-3,5) and (2,-5)</u> The line whose slope we want to find is the reflection line we are looking for. Two perpendicular lines have the rule of slope as follows. m₁ × m₂ = -1
Input the numbers -2 × m₂ = -1 m₂ = m₂ =
<u>Find the line equation</u> The reflection line has the slope of 1/2 and passes through the midpoint (-0.5, 0) The formula to find a line equation: y - y₁ = m(x - x₁)
Input the numbers (m = 1/2, x₁ = -0.5, y = 0) y - y₁ = m(x - x₁) y - 0 = 1/2 (x - (-0.5)) y = 1/2 (x + 0.5) y = This is the line equation
322kmh x1000= 322,000 meters per hour That is the relationship between km and m Because we are turning bigger units into smaller we the number will increase.
example 2 wks = 14 days two became 14 - it increased