MATHEMATICS MIDDLE SCHOOL

How to graph y=3x-8​

Answers

Answer 1
Answer:

Answer:

The graph of the linear equation is attached below

Step-by-step explanation:

y=3x-8​

To graph a linear equation , we use a table method

We take some random number for x  and find out y. Always assume some positive as well as negative numbers.

x     y=3x-8

-1        3(-1)-8= -11

0        3(0)-8=-8

1         3(1)-8= -5

The points for graphing are (-1,-11)  (0,-8)  and (1,-5)
Answer 2
Answer:

The graph of equation y = 3x - 8 is shown in image.

Since, The equation of line in point-slope form passing through the points (x₁ , y₁) and (x₂, y₂) with slope m is defined as;

⇒ y - y₁ = m (x - x₁)

Where, m = (y₂ - y₁) / (x₂ - x₁)

We have to given that;

Equation is,

⇒ y = 3x - 8

Now, By comparing with the equation of line, we get;

y - intercept of graph = (0, - 8)

And, Slope = 3

Hence, The graph of equation y = 3x - 8 with y - intercept is shown in image.

Learn more about the equation of line visit:

brainly.com/question/18831322

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A coral reef is losing 7% of its area annually. Create a table of percentage calculations for 10 years. If the coral reef starts out with 14,000 square feet, how much is left after 9 years?

Answers

Coral in square feet | Year
14,000 | start
13,020 | 1st year
12,108.6 | 2nd year
11,261 | 3rd year
10,472.73 | 4th year
9,739.64 | 5th year
9,057.87 | 6th year
8,423.82 | 7th year
7,834.15 | 8th year
7,285.76 | 9th year
6,775.76 | 10th year

What is a Cartesian plan?

Answers

I'm assuming you mean Cartesian plane. It is the same as a coordinate plane. There are two perpendicular lines with an x (horizontal) and y (vertical) axis. 
it is kinda like she said There are two perpendicular lines with an x horizontal and y vertical axis. i think that is in your math book as well 

A garden box has a perimeter of 27 1/2 feet. If the length is 9 feet, what is the area of the garden box?

Answers

Perimeter = (Length x 2) + (Width x 2)
27.5 = (9 x 2) + (Width x 2)
27.5 = 18 + (Width x 2)
9.5 = (Width x 2)
4.75 = Width

Let's check:
27.5 = (9 x 2) + (4.75 x 2)
27.5 = 18 + 9.5
27.5 = 27.5 

Since the width is 4.75 and the length is 9, we can multiply the two to get the area. 4.75 x 9 = 42.75 sq. ft.

The area of the garden box is 42³/₄ feet² = 42,75 feet²

Further explanation

To solve the above questions, we need to recall some of the formulas as follows:

Area of Square = (Length of Side)²

Perimeter of Square = 4 × (Length of Side)

Area of Rectangle = Length × Width

Perimeter of Rectangle = 2 × ( Length + Width )

Area of Rhombus = ½ × ( Diagonal₁ + Diagonal₂ )

Perimeter of Rhombus = 4 × ( Length of Side )

Area of Kite = ½ × ( Diagonal₁ + Diagonal₂ )

Perimeter of Kite = 2 × ( Length of Side₁ + Length of Side₂ )

Let us now tackle the problem !

Given:

Perimeter = P = 27 ¹/₂ feet

Length = L = 9 feet

Unknown:

Area = ?

Solution:

First we calculate the width of the garden box

\texttt{Perimeter} = 2 * ( \texttt{Length + Width} )

27(1)/(2) = 2 * ( 9 + \texttt{Width} )

27(1)/(2) / 2 = ( 9 + \texttt{Width} )

13(3)/(4) = 9 + \texttt{Width}

\texttt{Width} = 13(3)/(4) - 9

\texttt{Width} = \boxed {4(3)/(4) ~ \texttt{feet}}

Finally we can calculate the area of the garden box

\texttt{Area} = \texttt{Length} * \texttt{Width}

\texttt{Area} = 9 * 4(3)/(4)

\texttt{Area} = \boxed {42(3)/(4) ~ \texttt{feet}^2}

Learn more

Answer details

Grade: College

Subject: Mathematics

Chapter: Two Dimensional Figures

Keywords: Perimeter, Area , Square , Rectangle , Side , Length , Width

Figure ABCD has vertices A(−2, 3), B(4, 3), C(4, −2), and D(−2, 0). What is the area of figure ABCD?

Answers

Answer:

The area of figure ABCD is:

                    24 square units.

Step-by-step explanation:

We see that the given points form the vertices of a trapezium ABCD with bases AD and CB with measure,

AD= 3 units

and CB=5 units

and the height of the trapezium is: AB= 6 units.

Hence, the area of trapezium ABCD is:

Area=(1)/(2)* (AD+CB)* AB\n\n\nArea=(1)/(2)* (3+5)* 6\n\n\nArea=(1)/(2)* 8* 6\n\n\nArea=24

         Hence, the area of figure ABCD is:

           24 square units.

$120
for 5 days of work​

Answers

I think you have to multiply them
Like
120 *5 = 600

What value of k makes the statement true? –(k + 12) = 6 + (–12)A.
–18

B.
–6

C.
6

D.
18

Answers

the answer is B.if you solve the other sideit will give -6 which is B
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