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iVinArrow [24]
2 years ago
7

Which of the following equations is 2x + 3y = 6 written in slope-intercept form.

Mathematics
2 answers:
AleksandrR [38]2 years ago
5 0
Y=(2/3)×+2 yuhhuhyhhy
Nookie1986 [14]2 years ago
5 0

Answer:

The equation y=-\frac{2}{3}x+2

Step-by-step explanation:

Equations of the form ax+by=c are known as Standard Form for a linear equation in two variables, x and y, in the case of your equation  2x+3y=6 where a = 2, b = 3 and c = 6.

Equations of the form y = -\frac{ax}{b}+\frac{c}{b} are known as Slope-Intercept form. This is called in this way because -\frac{a}{b} is equal to the slope of the line, and \frac{c}{b} is the value of y when x = 0, which makes it the y-intercept.

To convert from standard form 2x+3y=6 to slope-intercept form y = -\frac{ax}{b}+\frac{c}{b}, we need to follow these steps:

  1. Subtract 2x from both sides 2x+3y-2x=6-2x
  2. Simplify 3y=6-2x
  3. Divide both sides by 3 \frac{3y}{3} =\frac{6}{3}-\frac{2x}{3}
  4. Simplify y = 2-\frac{2x}{3} = -\frac{2x}{3} + 2
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masya89 [10]

Answer:

z= \frac{3.44-2.54}{0.45}=2

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Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Let X the random variable that represent the grade points avergae of a population, and for this case we know the following properties

Where \mu=2.54 and \sigma=0.45

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So we can find the z score for the value of X=3.44 in order to see how many deviations above or belowe we are from the mean like this:

z= \frac{3.44-2.54}{0.45}=2

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P(X>3.44) = P(Z>2) = 0.025

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