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katen-ka-za [31]
3 years ago
8

Heyo! I need some help, please. What is the x coordinate if (x, 17) is on a line that passes through the points (1, 2) and (-1,

-8) on a standard (x, y) coordinate plane?
Mathematics
2 answers:
expeople1 [14]3 years ago
5 0

Answer:

  • x = 4

Step-by-step explanation:

<u>The line with points (1,2) and (-1,-8). Work out its equation.</u>

  • y = mx + b

<u>The slope is:</u>

  • m = (-8 - 2)/(-1 - 1) = -10/-2 = 5

<u>To find the y intercept, substitute x and y-xoordinates of point (1,2):</u>

  • 2 = 5(1) + b
  • b = 2 - 5
  • b = -3

<u>The line is:</u>

  • y = 5x - 3

<u>Point (x, 17), substitute y-coordinate and solve for x</u>

  • 17 = 5x - 3
  • 5x = 17 + 3
  • 5x = 20
  • x = 20/5
  • x = 4
Naya [18.7K]3 years ago
5 0

Answer:

X = 4

Step-by-step explanation:

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Pls help , need this done by tomorrow.
ycow [4]

Answer:

3x+2y = 30

Step-by-step explanation:

The area of the rectangle on the left is

A = 3x

The area of the rectangle on the right is

A = 2y

The sum of the areas is

3x+2y = 30

7 0
3 years ago
1. Find the equation of a line passing through the points (1,-2) and (-3,10).​
liraira [26]

Answer:

Step-by-step explanation:

(1 , -2)   x₁ =1 & y₁ = -2

(-3,10)  x₂= -3 & y₂ = 10

First we need to find the slope.

\boxed{Slope = $\dfrac{y_{2}-y_{1}}{x_{2}-x_{1}}$}\boxed{Slope=\dfrac{y_{2}-y_{1}}{x_{2}-x_{1}}}

          =\dfrac{10-[-2]}{-3-1}\\\\\\=\dfrac{10+2}{-4}\\\\\\=\dfrac{12}{-4}\\\\\\= - 3

m = -3

Equation of the line: y = mx + b

y = -3x + b

To find the value of b, take one of the point and substitue in the above equaiton.

(1 , -2)

-2 = -3*1 + b

-2 = -3 + b

-2 + 3 = b

b = 1

Equation of the line:

y = -3x + 1

4 0
3 years ago
150 ÷17 for fifth graders
I am Lyosha [343]
150/17=8.<span>82352941176 or 8.8 rounded to the nearest tenth.</span>
8 0
3 years ago
PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!
777dan777 [17]

Answer:   (C) 13,120

<u>Step-by-step explanation:</u>

Given the sequence {4, 12, 36, 108, ... , 8748} we know that the first term (a) is 4 and the ratio (r) is \dfrac{12}{4}=3

Input the values above into the Sum formula:

S_n=\dfrac{a(1-r^n)}{1-r}\\\\S_8=\dfrac{4(1-3^8)}{1-3}\\\\.\quad=\dfrac{4(1-6561)}{-2}\\\\.\quad=\dfrac{4(-6560)}{-2}\\\\.\quad=-2(-6560)\\\\.\quad=13,120

5 0
3 years ago
(?,5) is on the line 4x-7y=1. Find the other half of the coordinate.
ludmilkaskok [199]
The coordinate is an ordered pair (x,y). We have a number, 5, for y, which we can substitute (plug-in) for y in the equation of the line and solve for x.

4x-7y=1\\4x-7(5)=1\\4x=36\\x=9

(9,5)
8 0
3 years ago
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