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Anuta_ua [19.1K]
3 years ago
15

Please help! 20+ points!!

Mathematics
1 answer:
Aleksandr [31]3 years ago
7 0

Answer:

y = -2x + 8

Step-by-step explanation:

f(2) = 4 is the same as (2, 4) where x = 2 and y = 4

f(3) = 2 is the same as (3, 2) where x = 3 and y = 2

m is the slope of the line

b is the y-intercept

y = mx + b

To find the slope,

m = (y2 - y1)/(x2 - x1) = (2 - 4)/(3 - 2) = (-2)/(1) = -2

m = -2

y = -2x + b

To solve for b, take one of the two given values.

Using (2, 4)

4 = -2(2) + b

4 = -4 + b

b = 8

Using (3,2)

2 = -2(3) + b

2 = -6 + b

b = 8

y = -2x + 8

To double check b = 8,

The y-intercept is when x = 0.

y = -2(0) + 8

y = 8

(0, 8)

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divide the diameter by 2

Step-by-step explanation:

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PLEASE ANSWER <br><br> ...<br> Subtract-3x – 8 from 4x2<br> 72 – 2.
agasfer [191]
I’m guessing you meant 4x^2 (x to the power of two or x squared) rather than 4x2 (4 multiplied by two, meaning 8).

4x^2 -(-3x-8)
= 4x^2 +3x +8

72-2 = 70
7 0
4 years ago
A car drives with a constant speed of 20 km/h. How long will it take to travel a distance of 160 kilometers?
harkovskaia [24]

ANSWER:

We know that,

Speed = Distance/Time

So, Time taken = 20kmh-¹/160km

  • 1/8h or 7.5min.
5 0
3 years ago
This is Algebra btw.
Brums [2.3K]
<h2>Step-by-step explanation:</h2>

Given equations;

y₁ = 3x - 8               -------------------(i)

y₂ = 0.5x + 7          --------------------(ii)

To fill the table, substitute the values of x into equations (i) and (ii)

=> At x = 0

y₁ = 3(0) - 8 = -8

y₂ = 0.5(0) + 7 = 7

=> At x = 1

y₁ = 3(1) - 8 = -5

y₂ = 0.5(1) + 7 = 7.5

=> At x = 2

y₁ = 3(2) - 8 = -2

y₂ = 0.5(2) + 7 = 8

=> At x = 3

y₁ = 3(3) - 8 = 1

y₂ = 0.5(3) + 7 = 8.5

=> At x = 4

y₁ = 3(4) - 8 = 4

y₂ = 0.5(4) + 7 = 9

=> At x = 5

y₁ = 3(5) - 8 = 7

y₂ = 0.5(5) + 7 = 9.5

=> At x = 6

y₁ = 3(6) - 8 = 10

y₂ = 0.5(6) + 7 = 10

=> At x = 7

y₁ = 3(7) - 8 = 13

y₂ = 0.5(7) + 7 = 10.5

=> At x = 8

y₁ = 3(8) - 8 = 16

y₂ = 0.5(8) + 7 = 11

=> At x = 9

y₁ = 3(9) - 8 = 19

y₂ = 0.5(9) + 7 = 11.5

=> At x = 10

y₁ = 3(10) - 8 = 22

y₂ = 0.5(10) + 7 = 12

The complete table is attached to this response.

(ii) To find the solution of the system of equations using the table, we find the value of x for which y₁ and y₂ are the same.

As shown in the table, that value of <em>x = 6</em>. At this value of x, the values of y₁ and y₂ are both 10.

5 0
3 years ago
( Will give Brainlies) Please Helpp
mario62 [17]

Answer:

15 or below

Step-by-step explanation:

10+10+8+8 = 36

51-36 = 15

Less than or equal to = 15 or below

4 0
3 years ago
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