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ELEN [110]
1 year ago
7

Alinewithaslopeof–2passesthroughthepoint (2, –9) . What isitsequationin slope -intercept form? Write your answer using integers,

proper fractions, and improper fractions in simplest form.
Mathematics
1 answer:
lbvjy [14]1 year ago
6 0

The slope-intercept form of the line is y = - 2x - 5.

What is the slope of a line?

A line's slope is determined by how its y coordinate changes in relation to how its x coordinate changes. y and x are the net changes in the Δy and Δx coordinates, respectively. Consequently, it is possible to write the change in y coordinate with respect to the change in x coordinate as m = Δy/Δx.

Given that the slope of the line is -2.

The line passes through the point (2,-9).

The equation of line that passes through (x₁, y₁)  with slope m is

y - y₁ = m (x - x₁).

y - (-9) = -2(x -2)

y +9 = -2x + 4

y = -2x - 5

To learn more about slope-intercept, click on below link:

brainly.com/question/19130614

#SPJ1

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Help please and thanks! I'll award brainliest if you show your work as well :)
iren2701 [21]

Answer:

6 inches

Step-by-step explanation:

Formula for surface area of a cylinder:

SA=2\pi r^{2} +2\pi rh

Plug in values and solve for the radius:

180\pi =2\pi r^{2} +2\pi r(9)\\

Divide both sides by 2\pi

90=r^{2} +r(9)

Subtract 90 from both sides

0=r^{2} +9r-90

Use the quadratic equation to find the roots

x=(-b±\sqrt{b^2-4ac})*\frac{1}{2a} (sorry for formatting, Brainly doesn't

                                           allow equations with ± in them)

x=\frac{-9+\sqrt{9^2-4*1*90} }{2(1)}        and          x=\frac{-9-\sqrt{9^2-4*1*90} }{2(1)}

x=\frac{(-9+\sqrt{81+360})}{2}          and          x=\frac{(-9-\sqrt{81+360})}{2}

x=\frac{(-9+\sqrt{441})}{2}               and          x=\frac{(-9-\sqrt{441})}{2}

x=\frac{(-9+21)}{2}                   and          x=\frac{(-9-21)}{2}

x=\frac{12}{2}                           and          x=\frac{-30}{2}

x=6                             and          x=-15  

We can't have a negative radius, so that leaves us with r=6 in.

8 0
2 years ago
A firefighter places a 29 feet ladder, so that the base of the ladder is 21 feet from the wall. What is the height at which the
Tju [1.3M]
Pythagorean theorem:
a^2+b^2=c^2 (C^2 always is the hypotenuse)

21^2+b^2=29^2
441+b^2=841
841-441=400
square root of 400 is 20
Your answer is 20
6 0
3 years ago
Help me pleaseeee just a yes or no question
oee [108]
The points have to have the coordinate y=4 to be on the y=4 line

only the (1, 4) point matches this, so yes it is a solution, all others not and are therefore no
3 0
3 years ago
Which is the best estimate of -14 1/9 × -2 9/10 ​
lana [24]

Answer: 42

Step-by-step explanation:

-14 1/9 would round to -14

-2 9/10 would round to -3

-14 x -3= 42

7 0
3 years ago
Read 2 more answers
shawn has two fields on his farm. he plants two types of corn. each field has 60 rows of cornstalks. type a grows better so ther
WINSTONCH [101]

Type a= 8x60

=480

b=3x60

=180

6 0
3 years ago
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