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2 years ago

15

What is the rate of change for 7x + 8y = 56

1 answer:

natali 33 [55]2 years ago

6 0

Answer:

-7/8

Step-by-step explanation:

7x+8y=56

8y=-7x+56

8y/8=(-7x+56)/8

y=(-7/8)x+7

Slope is the rate of change.

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PLSSSSSSSSSSSSSSSSS HELP ME PLSSSSSSSSSSSSSSSSSSSSSSS

sp2606 [1]

Answer:

E. None of the above

Step-by-step explanation:

We know that 1/8 is the same as 1÷8 Then using Long Division for divided by 8 gives us 0.125

3 0

2 years ago

For the function f(x)

WITCHER [35]

Given:

The function is

$f(x)=\dfrac{8\sqrt[3]{x}-8}{9}$

To find:

The inverse function $f^{-1}(x)$ .

Solution:

We have,

$f(x)=\dfrac{8\sqrt[3]{x}-8}{9}$

Step 1: Putting f(x)=y, we get

$y=\dfrac{8\sqrt[3]{x}-8}{9}$

Step 2: Interchange x and y.

$x=\dfrac{8\sqrt[3]{y}-8}{9}$

Step 3: Isolate variable y.

$9x=8\sqrt[3]{y}-8$

$9x+8=8\sqrt[3]{y}$

$\dfrac{9x+8}{8}=\sqrt[3]{y}$

Taking cube on both sides, we get

$\left(\dfrac{9x+8}{8}\right)^3=y$

$y=\left(\dfrac{9x+8}{8}\right)^3$

Step 4: Putting $y=f^{-1}(x)$ , we get

$f^{-1}(x)=\left(\dfrac{9x+8}{8}\right)^3$

Therefore, the correct option is C.

4 0

2 years ago

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icang [17]

Answer:

b

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

F(x)=2(x-5)(x+7) What is f(-7)

jenyasd209 [6]

Answer:

Step-by-step explanation:

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2 years ago

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Tanya [424]

Answer:

A, B and E

Step-by-step explanation:

A proportional relationship has the form

y = kx ← k is the constant of proportionality

The only equations in this form are

A, B and E

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2 years ago