For Exercises 17–22, use the point-slope formula to write an equation of the line given the following information. (See Example 2.) The line passes through the points ( 4.7 , − 2.2 ) and ( − 0.3 , 6.8 ) .
For Exercises 17–22, use the point-slope formula to write an equation of the line given the following information. (See Example 2.) The line passes through the points ( 4.7 , − 2.2 ) and ( − 0.3 , 6.8 ) .
Solution Summary: The author calculates the equation of the line passing through the points using the point-slope formula.
For Exercises 17–22, use the point-slope formula to write an equation of the line given the following information. (See Example 2.)
The line passes through the points
(
4.7
,
−
2.2
)
and
(
−
0.3
,
6.8
)
.
Formula Formula Point-slope equation: The point-slope equation of a line passing through the point (x 1 , y 1 ) with slope m , is given by the following formula: y - y 1 = m x - x 1 Example: The point-slope equation of a line passing through (2, -6) with slope 5 is given by: y - (-6) = 5(x - 2) y + 6 = 5(x - 2)
2. Find the exact value of 12 + 12+12+√√12+ √12+
12
Technetium-99m is used as a radioactive tracer for certain medical tests. It has a half-life of 1 day. Consider the function TT where T(d)T(d) =100(2)−d=100(2)−d is the percent of Technetium-99m remaining dd days after the test. Which expression represents the number of days until only 5% remains?
1. Find the inverse of f(x) =
=
2x
1+2x
Then find the domain of the inverse.
Elementary Statistics ( 3rd International Edition ) Isbn:9781260092561
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