A submarine was located 200 feet below sea level. If it ascends 55 feet and then drops 87 feet, then which integer represents th
2 answers:
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For this case we must find the point that Harold used to arrive at the following equation:
Starting from the fact that the equation of the point-slope form of a line is given by:
If we compare the standard equation with Harold's, we see that the slope of the line is
In addition, it is observed that and
Then, the correct option is: Harold used the point (7,0)
ANswer:
When Harold wrote his equation, the point was used (7,0).
the function f(x) = 4(x+3) − 5
Lets find the inverse function f^-1(x)
step 1: Replace f(x) with y
y = 4(x+3) − 5
step 2: Replace x with y and y with x
x = 4(y+3) - 5
step 3: Solve for y
x = 4(y+3) - 5
x = 4y +12 -5
x= 4y + 7 (subtract 7 on both sides)
x - 7 = 4y (divide by 4 on both sides)
Given : x = 3
We plug in 3 for x in the inverse function
= -1
the inverse function when x = 3 is -1