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Dmitrij [34]
3 years ago
7

Please help!!!!!!!!!!!!!!!!!

Mathematics
2 answers:
Viefleur [7K]3 years ago
6 0

Answer:

y = 2/3x + 4

Step-by-step explanation:

Slope-intercept form of a line:

y = mx + b

where m = slope and b = y-intercept

To find the equation of a line, we need two points that the line passes through.  

We can use the x-intercept and y-intercept of the line: (-6,0) and (0,4), respectively.

Find the slope of the line using these two points:

Slope formula:  

Plug the two points into the formula.

Subtract and simplify this fraction.

The slope of this line is m = 2/3.

Now we can look at the graph to determine the y-intercept of this line; the line intersects the y-axis at (0,4) so the constant b = 4.

We can use the slope, m, and the y-intercept, b, and substitute these values into the slope-intercept form of a line.

y = 2/3x + 4

The equation of the line is y = 2/3x + 4.

Andrej [43]3 years ago
3 0

Answer:

y = 2/3x + 4

Step-by-step explanation:

Slope-intercept form of a line:

  • y = mx + b
  • where m = slope and b = y-intercept

To find the equation of a line, we need two points that the line passes through.  

We can use the x-intercept and y-intercept of the line: (-6,0) and (0,4), respectively.

Find the slope of the line using these two points:

  • Slope formula: \displaystyle \bf  \frac{y_2-y_1}{x_2-x_1}

Plug the two points into the formula.

  • \displaystyle \frac{4-0}{0-(-6)}

Subtract and simplify this fraction.

  • \displaystyle \frac{4}{6} =\frac{2}{3}

The slope of this line is m = 2/3.

Now we can look at the graph to determine the y-intercept of this line; the line intersects the y-axis at (0,4) so the constant b = 4.

We can use the slope, m, and the y-intercept, b, and substitute these values into the slope-intercept form of a line.

  • y = 2/3x + 4

The equation of the line is y = 2/3x + 4.

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Please write an equation for line N.
Lana71 [14]

Answer:

y = x-1

Step-by-step explanation:

First step is to find the slope

Take two points on the line  (1,0) and (2,1)

m = (y2-y1)/(x2-x1)

   = (1-0)/(2-1)

   = 1/1

The slope is 1

The y intercept ( where it crosses the y axis is -1)

The slope intercept form of the line is

y = mx+b where m is the slope and b is the y intercept

y = 1x-1

y = x-1

5 0
3 years ago
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Ne4ueva [31]
74

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3 years ago
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Delia is a graphic designer who charges an hourly rate. She made the graph to show her total earnings for various numbers of hou
stich3 [128]

Answer:

approximately 7 hours

see the explanation

Step-by-step explanation:

The picture of the question in the attached figure

Let

x ----> the time worked in hours

y ----> the amount earning in dollars

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form k=\frac{y}{x} or y=kx

In a proportional relationship the constant of proportionality k is equal to the slope m of the line <u><em>and the line passes through the origin</em></u>

so

In this problem we have a proportional relationship

step 1

Find approximately how many hours would it take Delia to earn $250 ?

Looking at the graph

For y=$250 The value of x is approximately 7 hours

see the attached figure N 2

step 2

Find the exact value

from the graph take the point (5,175)

Find the value of k

k=\frac{y}{x} ----> k=\frac{175}{5}=\$35\ per\ hour

The linear equation is

y=35x

For y=$250

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250=35x

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8 0
3 years ago
your car broke down and the final bill was $306.50. The part that was replaced cost $119 and the charge mechanics labor was 75 p
erastova [34]

Answer:

\huge\boxed\text{Equation:}\huge\boxed{\text{Equation:   }119+75x=306.50}\\

\huge\boxed{\text{Hours worked on:   } 2.5}

Step-by-step explanation:

We can create an equation for this problem by converting the words to an equation.

The <em>flat fee</em> was $119. We then add $75 for every hour worked. This means that this becomes 119+75x. Since the total cost was $306.50, the equation is 119+75x=306.50.

We can now solve for x, the amount of hours worked, to find it’s value.

119 + 75x = 306.5\\\\75x=187.5\\\\x = 2.5

Hope this helped!

5 0
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What is the value of<br> 3 to the power of 2 under 3 to the power of 4
garri49 [273]

Answer: 9/81

Step-by-step explanation:

I did 3 to the second power then 3 to the fourth power. Then put them on top of each other. If the over is supposed to mean division then the answer would be 9.

6 0
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