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CAHSEE Algebra I: Drill 1, Problem 1. What are some of the properties used to solve this equation?
Algebra I Drill 2, Problem 3. Which of the following is the same as the expression?
GED Math 1.4 Graphs and Functions 2274 Views
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Description:
GED Math 1.4 Graphs and Functions. On which point on the graph is f(x) equal to 0?
Transcript
- 00:00
Thank you We sneak in and here's your shmoop du
- 00:05
jour brought to you by the function of acts Ironically
- 00:08
excess family is pretty dysfunctional All right Well given that
- 00:14
f of ax equals the square root of five x
- 00:16
plus fifteen select a point on the graph below Where
Full Transcript
- 00:20
f of x is equal to zero parentless that's where
- 00:24
this thing he added up Root of five zero Where
- 00:28
is a hero All right so this question asked us
- 00:32
to take a function and figure out where that function
- 00:35
will be Nothing Nada zero cochin opened eyes on the
- 00:39
prize We got this way Want fx to be zero
- 00:42
Then we can replace the fx with zero to get
- 00:46
the equation Zero equals the square root of five x
- 00:49
plus fifteen Well if we square both sides we get
- 00:53
still zero over here and over here we get just
- 00:56
five x plus fifteen Well subtract fifteen from both sides
- 01:01
to get the negative Fifteen equals five x then divide
- 01:06
both sides by five Get x equals negative three so
- 01:12
that's our x coordinate Negative three But what about our
- 01:15
y coordinate Well since f of negative three equals zero
- 01:21
the point we're looking for must be negative Three zero
- 01:24
on this guy right here is the white corner though
- 01:26
Three units left along the x axis and that's It
- 01:29
there's our point Now all we have to do is
- 01:31
get ex out of that questionable living environment and everything 00:01:34.218 --> [endTime] will be just hunky dorey
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