A number divided by 7 Select one: a. 7+x b. 7/x c. x/7 d. 7x
2 answers:
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Answer:
X = 100
Step-by-step explanation:
- In proportion questions, they want you to multiply one of the sides by a variable, (i usually represent it with K) and then change the proportion sign to an equal.
- This is because proportional means they have a ratio between them, with one side increasing by "k" for each increase in the other side.
- Multiply the left by k, so
- we know that y= 5, for x = 36, so sub this in the equation
- simplify
- re-arrange for k, <u>k = 5*6 = 30</u>
- now we know k, we can create the real equation,
- sub in 3 as y
- <u>x = 100</u>
The slope is defined as
which means that you have the difference of the y coordinates of the two points at the numerator, and the difference of the x coordinates of the two points at the denominator.
So, if the two points have the same x coordinate, the denominator vanished, and the slope is not defined.
Since the only points with the same x coordinate are those in option c, that is the correct answer.