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3 years ago

Required 1. Rewrite in slope-intercept form. * - 7x + 2y = 8

Mathematics

1 answer:

djverab [1.8K]3 years ago

7 0

Answer:

y = $\frac{7}{2}$ x + 4

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c

Given

- 7x + 2y = 8 ( add 7x to both sides )

2y = 7x + 8 ( divide all 3 terms by 2 )

y = $\frac{7}{2}$ x + 4 ← in slope- intercept form

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The height and weight of adults can be related by the equation y=48.3x−127 where x is height in feet and y is weight in pounds.

suter [353]

we conclude that the correct option is A, the slope is:

<em>"the average number of pounds per foot tall"</em>

<h3>What does the slope of the line represent?</h3>

The linear equation:

y = 48.3*x - 127

Relates the height, x, and the weight, y of an adult.

Then the slope, which is 48.3, should have units of mass over height.

Now, if x is in feet and y is in pounds, then the slope has units of pounds/feet.

Then it represents the mean number of pounds per feet. So we conclude that the correct option is A:

"the average number of pounds per foot tall"

If you want to learn more about slopes:

brainly.com/question/1884491

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8 0

2 years ago

Hello, I'm trying to solve 6x + y = 4, x - 4y = 19. I have found the y but I cant seem to find the x. Plz help and we cant use d

gizmo_the_mogwai [7]

Answer:

$x=\frac{7}{5}$

$y=-\frac{22}{5}$

Step-by-step explanation:

Given:

The given expressions are.

$6x+y=4$

$x-4y=19$

We need to find x and y values.

Solution:

Equation 1⇒ $6x+y=4$

Equation 2⇒ $x-4y=19$

First solve the equation 1 for y.

$6x+y=4$

$y = 4-6x$ --------(3)

Substitute $y = 4-6x$ in equation 2.

$x-4(4-6x)=19$

Simplify.

$x-(4\times 4 - 4\times 6x)=19$

$x-(16-24x)=19$

$x-16+24x=19$

Add 16 both side of the equation.

$25x-16+16=19+16$

$25x=35$

$x=\frac{35}{25}$

Divide Numerator and denominator by 5.

$x=\frac{7}{5}$

Substitute x value in equation 3 and simplify.

$y=4-6(\frac{7}{5})$

$y=4-\frac{6\times 7}{5}$

$y=4-\frac{42}{5}$

$y=\frac{5\times 4-42}{5}$

$y=\frac{20-42}{5}$

$y=-\frac{22}{5}$ .

Therefore, the value of $x=\frac{7}{5}$ and $y=-\frac{22}{5}$ .

6 0

4 years ago

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Aleks [24]

Answer:

Step-by-step explanation:

The relationship between the number of pies and the cost is not proportional. This is because the third pie is at half price, meaning it's not consistent with the price of the other two.

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Answer:

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