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3 years ago

What is the equation for this line ?

Mathematics

1 answer:

konstantin123 [22]3 years ago

7 0

(-2,7)(0,-1)
slope = (-1 - 7) / (0 - (-2) = -8/2 = -4

y = mx + b
slope(m) = -4
use either ofur points (0,-1)...x = 0 and y = -1
now we sub and find b, the y int
-1 = -4(0) + b
-1 = b

so ur equation is : y = -4x - 1 or if u need it in standard form, it is
4x + y = -1

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8x+3>_x+10 how do i solve dis<br> HELP

VashaNatasha [74]

Answer:

x > 1

Step-by-step explanation:

Subtract 3 from both sides

8x + 3 - 3 > x + 10 - 3

Simplify

8x > x + 7

Subtract x from both sides

8x - x > x + 7 - x

Simplify

7x - 7

Divide both sides by 7

7x/7 > 7/7

Simplify

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5 0

3 years ago

What must be true for lines a and b to be parallel lines? Check all that apply

iren [92.7K]

the question does not present the options, but this does not interfere with the resolution

we know that

if a and b are parallel lines

1) m∠2=58°------> by corresponding angles

2) m∠1=4x-10------> by alternate exterior angles

3) [m∠2+m∠(3x-1)]+m ∠1=180°------> by supplementary angles

58+(3x-1)+4x-10=180

7x=180-47

7x=133

x=19°

4) angle (4x-10)=-4*19-10-------> 66°

5) angle 3x-1=3*19-1-------> 56°

3 0

3 years ago

Calculus HELP PLEASE? A highway runs due north. A car traveling at 50 mph exits the highway at a 30° angle. After driving anothe

mrs_skeptik [129]

Check the picture below.

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make sure your calculator is in Degree mode.

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3 years ago

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Valentin [98]

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3 years ago

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In an area of the Midwest, records were kept on the relationship between the rainfall (in inches) and the yield of wheat (bushel

dusya [7]

Answer:

The correct answer is 36.2

Step-by-step explanation:

Hello!

Given the data:

Rainfall(inch) x: 10.5, 8.8, 13.4, 12.5, 18.8, 10.3, 7.0, 15.6, 16.0

Yield (bushels per acre) y: 50.5, 46.2, 58.8, 59.0, 82.4, 49.2, 31.9, 76.0, 78.8

The response variable is

Y: Yield of wheat (bushels per acre)

Explanatory variable:

X: Rainfall in a certain period (inch)

I've calculated the equation of regression using a statistics software, the estimated equation is:

^Y= 4.27 + 4.38X

To calculate the value that will take the response variable for a given value of X:

^Y= 4.27 + 4.38*7.3= 36.24 bushels per acre.

I hope it helps!

5 0

3 years ago