Stan made 24 sales in 6 hours . what is the ratio of sales to hours?
2 answers:
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slope = - 2, midpoint = (2, - 2 )
the slope m is calculated using the ' gradient formula '
m = ( y₂ - y₁ ) / (x₂ - x₁ )
with (x₁, y₁ ) = (4, - 6 ) and (x₂, y₂ ) = (0, 2 )
m = =
= - 2
calculate midpoint using midpoint formula
{ (4 + 0 ),
(- 6 + 2 )] = (2, - 2 )
gradient of perpendicular bisector = - =
equation in slope-intercept form is
y = mx + c ( m is slope and c the y-intercept )
partial equation is y = x + c
to find c substitute ( 2, - 2) into the partial equation
- 2 = 1 + c ⇒ c = - 3
y = x - 3 in slope-intercept form