Which of the following represents the graph of the equation y = 5x – 4?
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OpenStudy (anonymous):
which way would the line go?
OpenStudy (anonymous):
Okay, let's convert it into a function.
OpenStudy (anonymous):
ok
OpenStudy (anonymous):
f(x) = 5x - 4
We can do this because y = f(x).
OpenStudy (anonymous):
Now you need to choose two values for x. What would you like to use?
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OpenStudy (anonymous):
i dont know wat u mean?
OpenStudy (anonymous):
Pick two numbers between 1 and 10.
OpenStudy (anonymous):
3 and 8
OpenStudy (anonymous):
It has a slope of 5/1 and at the b intersect, which is -4 go to the b intersect and then rise 5 and run 1. That will be your line
OpenStudy (anonymous):
Okay, cool.
f(x) = 5x - 4
Let x = 3
f(3) = 5(3) - 4
Let x = 8
f(8) = 5(8) - 4
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OpenStudy (anonymous):
MDoodler, please read the Code of Conduct and note that you are not supposed to give answers, but help people find them.
OpenStudy (anonymous):
Dustin, would you like me to explain how to do it, or would you rather use his answer?
OpenStudy (anonymous):
that
is not my answer anyways
OpenStudy (anonymous):
I figured.
OpenStudy (anonymous):
yes
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OpenStudy (anonymous):
jcpd I am not giving answer but explaining to the person one way to solve the problem
OpenStudy (anonymous):
Okay, back to what I was saying.
OpenStudy (anonymous):
f(x) = 5x - 4
Let x = 3
f(3) = 5(3) - 4
Let x = 8
f(8) = 5(8) - 4
OpenStudy (anonymous):
So now you have to solve the equations. Do you know how to do that?
OpenStudy (anonymous):
@Dustin15
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OpenStudy (anonymous):
how do you know what y is?
OpenStudy (anonymous):
We're solving for y. :)
OpenStudy (anonymous):
Remember y = f(x)
OpenStudy (anonymous):
you do know i am graphing right?
OpenStudy (anonymous):
So when we solve for f(3) and f(8) we are solving for y when x equals 3 and when x equals 8
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OpenStudy (anonymous):
You are graphing a line.
OpenStudy (anonymous):
Trust me. :D
OpenStudy (anonymous):
f(3) = 5(3) - 4
f(3) = 15 - 4 {multiply 5 by 3}
f(3) = 11 {subtract 4 from 15}
y = 11
So when x = 3, y = 11.
Therefor, an ordered pair on this line is:
(3,11)
OpenStudy (anonymous):
Want me to help you find the next ordered pair?
OpenStudy (anonymous):
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