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Dmitriy789 [7]
3 years ago
12

1. **What is the slope of a line that passes through the points (-1,30) and (4, 10)

Mathematics
1 answer:
tresset_1 [31]3 years ago
8 0

Answer:

Slope = -4

Step-by-step explanation:

Given points are :

(-1,30) and (4, 10)

We need to find the slope of the line that passes through these points.

We know that, the formula for the slope of line is given by :

m=\dfrac{y_2-y_1}{x_2-x_1}

We have, x₁ = -1, y₁ = 30, x₂ = 4 and y₂ = 10

Put values in the above formula.

m=\dfrac{10-30}{4-(-1)}\\\\=\dfrac{-20}{5}\\\\=-4

So, the slope of the line is -4.

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satela [25.4K]
I think it’s the second one sorry if I’m wrong ahhh
4 0
3 years ago
Find the slope of the line passing through the points (3, 4) and (8, -3).
aalyn [17]

Answer:

<h2>         \bold{m=-1\dfrac25}</h2>

Step-by-step explanation:

The slope of the line passing through two given points:  m=\dfrac{y_2-y_1}{x_2-x_1}

(3, 4)   ⇒   x₁ = 3,  y₁ = 4

(8, -3)   ⇒     x₂ = 8,  y₂ = -3

So, the slope:

                     m=\dfrac{-3-4}{8-3}=\dfrac{-7}{5}=-1\dfrac25

7 0
3 years ago
State what method you would use to solve the equation. Justify your answer. You do not need to solve the equation.
aleksandrvk [35]

Answer:

By factoring

Step-by-step explanation:

4x^2+25=20x then:

4x^2-20x+25=0

factoring:

(2x-5)(2x-5)=0

2x=5, x=2.5

5 0
3 years ago
15 points! Help me with this problem!
Darina [25.2K]

Answer: 51 inches

Step-by-step explanation:

3x = 9

x=3

P= 3(3) + 4(3) + 10(3)

= 9 + 12 + 30

= 51 Inches

Hope this helps! :)

7 0
4 years ago
Read 2 more answers
60 points for all the three questions, just please help me
choli [55]

Answer:

  • D. Neither
  • x- intercept: (-13/6, 0), y- intercept: (0, 13)
  • (-1, 3)

Step-by-step explanation:

#1

  • y = -2x - 5

<u>Substitute pairs of solutions and verify</u>

(1, 7)

  • 7 = -2*1 - 5
  • 7 = -7
  • Wrong

(2, -7)

  • -7 = -2*2 - 5
  • -7 = -11
  • Wrong

Correct choice is <u>D. Neither</u>

#2

  • y = 6x + 13

<u>x- intercept: y = 0</u>

  • 6x + 13 = 0
  • 6x = -13
  • x = -13/6
  • (-13/6, 0)

<u>y- intercept: x = 0</u>

  • y = 6*0 + 13
  • y = 13
  • (0, 13)

#3

  • y - 3 = 2(x + 1)

<u>x = -1 ⇒ find y:</u>

  • y - 3 = 2(-1 + 1)
  • y = 3
  • (-1, 3)
8 0
3 years ago
Read 2 more answers
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