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creativ13 [48]
3 years ago
14

What is the equation of a line that passes through points (-3,0.5) and (3, -0.5)?

Mathematics
2 answers:
svetlana [45]3 years ago
7 0

Answer:

y=-1/6x + 0   or     y=-1/6x    (when b = 0 then you leave it out)

Step-by-step explanation:

Find the slope:

-0.5 - 0.5/3 - (-3) = -1/6

Find the y intercept (b): Plug in the x, y and m into y= mx + b

0.5=(-3)(-1/6) + b

0.5=1/2 + b

0.5-0.5 = b (change the 1/2 into a decimal 0.5 to make it easier to subtract

0=b

Now plug in the m and the b that you just found into the equation y=mx+b

y=-1/6x + 0 or y=-1/6x    (when b = 0 then you leave it out)

Igoryamba3 years ago
7 0

The slope-intercept form:

y=mx+b

m - slope

b - y-intercept

The formula of  slope:

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

We have the points (-3, 0.5) and (3, -0.5). Substitute:

m=\dfrac{-0.5-0.5}{3-(-3)}=\dfrac{-1}{6}=-\dfrac{1}{6}

Put it to the equation of a line:

y=-\dfrac{1}{6}x+b

Put the coordinates of the point (3, -0.5) to the equation of a line:

-0.5=-\dfrac{1}{6}(3)+b

-0.5=-\dfrac{1}{2}+b

-0.5=-0.5+b          <em>add 0.5 to both sides</em>

b=0

Answer: \boxed{A.)\ y=-\dfrac{1}{6}x}

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How long is the rail? Round your answer to the nearest tenth.
ziro4ka [17]

Answer:

D. 15.7 yards

Step-by-step explanation:

The safety rail makes a curved side of a quarter circle.

The length of the safety rail = circumference of the curved part only of a quarter circle = ¼*2πr

Where,

radius = 10 yards

π = 3.14

Plug in the values

= ¼*2*3.14*10

= 15.7 yards.

✅The rail is 15.7 yards long.

8 0
3 years ago
I need help with this I don’t understand
klasskru [66]

Answer:

Step-by-step explanation:

∠3 = 180 - ∠1      {linear pair}

     = 180 - 105

      = 75°

∠2 = ∠3    {Corresponding angles"

∠2 = 75

5 0
2 years ago
What is the difference between bernoulii equation and riccati equation
melisa1 [442]
The Bernoulli equation is almost identical to the standard linear ODE.

y'=P(x)y+Q(x)y^n

Compare to the basic linear ODE,

y'=P(x)y+Q(x)

Meanwhile, the Riccati equation takes the form

y'=P(x)+Q(x)y+R(x)y^2

which in special cases is of Bernoulli type if P(x)=0, and linear if R(x)=0. But in general each type takes a different method to solve. From now on, I'll abbreviate the coefficient functions as P,Q,R for brevity.

For Bernoulli equations, the standard approach is to write

y'=Py+Qy^n
y^{-n}y'=Py^{1-n}+Q

and substitute v=y^{1-n}. This makes v'=(1-n)y^{-n}y', so the ODE is rewritten as

\dfrac1{1-n}v'=Pv+Q

and the equation is now linear in v.

The Riccati equation, on the other hand, requires a different substitution. Set v=Ry, so that v'=R'y+Ry'=R'\dfrac vR+Ry'. Then you have

y'=P+Qy+Ry^2
\dfrac{v'-R'\dfrac vR}R=P+Q\dfrac vR+R\dfrac{v^2}{R^2}
v'=PR+\left(Q+\dfrac{R'}R\right)v+v^2

Next, setting v=\dfrac{u'}u, so that v'=\dfrac{uu''-(u')^2}{u^2}, allows you to write this as a linear second-order equation. You have

\dfrac{uu''-(u')^2}{u^2}=PR+\left(Q+\dfrac{R'}R\right)\dfrac{u'}u+\dfrac{(u')^2}{u^2}
u''-\left(Q+\dfrac{R'}R\right)u'+PRu=0
u''+Su'+Tu=0

where S=-\left(Q+\dfrac{R'}R\right) and T=PR.
3 0
3 years ago
The quantities x and y are proportional.
Maslowich

Answer:

The value of the constant of proportionality r is 1

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form  or

Find the value of the constant of proportionality r

For x=5.8, y=5.8

substitute

The linear equation is

therefore

The value of the constant of proportionality r is 1

6 0
2 years ago
Read 2 more answers
PLEASE HELP!!! 50 PTS
marshall27 [118]

Answer:

200,176.32016703

correct me if im wrong

Step-by-step explanation:

sorry kung mali

8 0
2 years ago
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