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3 years ago

X-y=−3 slope intercept form

Mathematics

1 answer:

seraphim [82]3 years ago

5 0

Answer:

y = x +3

Step-by-step explanation:

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the difference between seven times one number and three times a second number is 25. The sum of twice the first and five times t

inysia [295]

$\left \{ {{7*x - 3*y=25} \atop {2*x + 5*y=95}} \right.$

$\left \{ {{7x - 3y=25}(I) \atop {2x + 5y=95}(II)} \right.$

$\left \{ {{7x - 3y=25}simplify*(5) \atop {2x + 5y=95}simplify*(3)} \right.$

$\left \{ {{35x - \diagup\!\!\!\! 15 y=125} \atop {6x + \diagup\!\!\!\! 15y=285}} \right.$

$\left \{ {{35x =125} \atop {6x =285}} \right.$

$41x = 410$

$\boxed{x=10}$

Replace the value of "x" in the second equation (II) to find the value of "y", thus:
 $2x + 5y=95$
$2*(10)+5y = 95$
$20+5y=95$
$5y=95-20$
$5y=75$
$y = \frac{75}{5}$
$\boxed{y=15}$

The numbers (10,15)

5 0

3 years ago

a nutrition major at wright state was studying the relationship between carbohydrates (x) and calories (y). for example, a servi

VLD [36.1K]

Answer:

The predicted calories would be 403 calories.

Step-by-step explanation:

We have a linear regression model relating y: calories with x: carbohydrates, which has a slope of 4.0 and a y-intercept of 3.0.

Then, the model equation is:

$y=4.0x+3.0$

With these model we can predict the calories values for any amount of carbohydrates, within the interval within which this model is valid.

If a new food is tested, and the number of carbohydrates (x) is 100, the predicted value will be:

$y(100)=4.0(100)+3.0=400+3=403$

The predicted calories would be 403 calories.

6 0

3 years ago

What's the rule? X10 5 25 y 41 21 101

mario62 [17]

It looks to me like y = 4x + 1

3 0

3 years ago

Write the slope-intercept form of the equation for the line given the slope and y-intercept (equation: y=mx+b) Slope = 5, y-inte

Rufina [12.5K]

Answer:

y=5x+2

Step-by-step explanation:

Slope formula:

y=mx+b

- m stands for slope

- b stands for y intercept.

Plug the information in:

y=5x+2

3 0

3 years ago

Using descriptive statistics, you have found out that it takes an average of 40 minutes to complete a mid-term examination in IS

choli [55]

Answer:

b. exam completion time is negatively skewed

Step-by-step explanation:

A data distribution is said to be negatively skewed when median value of the distribution is higher than the average value of the distribution.

In this example

average mid-term completion time is 40 minutes

median mid-term completion time is 55 minutes.

thus median > mean, so the mid-term completion time is negatively skewed. Negatively skewed distributions are also called left-skewed.

6 0

3 years ago