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kicyunya [14]
3 years ago
14

Passes through (4,-5), slope = 3/4

Mathematics
1 answer:
Alchen [17]3 years ago
3 0
Equation = y = mx + b
y = 3/4x + b

Calculation for b.,
-5 = 3/4 * 4 + b
b = -5/3

So, your final answer is y = 3/4x - 5/3

Hope this helps!
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For what values of a and b are x+1 and x+2 factors of x3 – ax2 – bx –8? Write down the other factor.
emmainna [20.7K]
<h2>For a = 1 and b = 10 x+1 and x+2 factors of  x³-ax²-bx-8 = 0</h2><h2>Other factor is (x-4)</h2>

Step-by-step explanation:

We have

                 x³-ax²-bx-8 = 0

Its factors are x+1 and x+2

That is x = -1 and x = -2 are its roots

Substituting x = -1

               (-1)³-a(-1)²-b(-1)-8 = 0

                -1 - a + b - 8 = 0

                      b - a = 9 ---------------------eqn 1

Substituting x = -2

               (-2)³-a(-2)²-b(-2)-8 = 0

                -8 - 4a + 2b - 8 = 0

                      2b - 4a = 16 ---------------------eqn 2

eqn 1 x -2

                      -2b + 2a = -18 ---------------------eqn 3

eqn 2 + eqn 3

                      -2a = -2

                          a = 1

Substituting in eqn 1

                        b - 1 = 9

                         b = 10

For a = 1 and b = 10,  x+1 and x+2 factors of  x³-ax²-bx-8 = 0

The equation is  x³-x²-10x-8 = 0

Dividing with x + 1 we will get

                   x³-x²-10x-8 = (x+1)(x²-2x-8)

Dividing (x²-2x-8) with x + 2 we will get

                  x²-2x-8 = (x+2)(x-4)

So we have

               x³-x²-10x-8 = (x+1)(x+2)(x-4)

Other factor is (x-4)

8 0
3 years ago
Logaritnm<br> 3 log b + 2 log d
rodikova [14]

Step-by-step explanation:

I have solved the question it is in the picture I hope it helps

5 0
3 years ago
If the function rule is y = x/2 + 3 and x = 8, what is the value of y?
Ulleksa [173]
You only need to replace the value of x in the function rule. You'll get:
y=\frac{x}{2}+3=\frac{8}{2}+3=4+3=7
4 0
3 years ago
Read 2 more answers
Respuesta de 17 entre 264. 31
Alexxandr [17]
<span>0.0643184139836

creo que a eso te refieres!!!

hay una paguina de brainly en espanol ahi tambien te pueden ayudar

es:brainly.lat


</span>
4 0
3 years ago
500/25=100/y<br> help me in this :(
kupik [55]

Answer:

\boxed{\boxed{\sf  1  \ by \ 2  }}

500/25 = 100/y

100/5 = 100/y

20 = 100/Y

200/1 = 100/Y

By cross multiplication

200 × Y = 100 × 1

Y = 100 /200

Y = 1/2

6 0
3 years ago
Read 2 more answers
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