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2 years ago

Look at the comments under this question! y = 10-3x and 2x+2y = 0

Mathematics

1 answer:

raketka [301]2 years ago

6 0

Answer:

Yes! You would sub 10-3x for y and solve.

Don't forget to use the distributive property! Your answer should be 5.

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F(x) = -7x - 1<br> f() = -8

xxMikexx [17]

Answer:

f(1) = -8

Step-by-step explanation:

Apparently, you want the argument of the function such that the function value is -8. Fill in the given information and solve for x:

-8 = -7x -1

-7 = -7x . . . . add 1

1 = x . . . . . . . divide by -7

Now, you know that ...

f(1) = -8

3 0

2 years ago

Find the inverse of the function. f(x) = 7x + 8

lana66690 [7]

Answer:

$\frac{x-8}{7}$

Step-by-step explanation:

A way to find the inverse function is to swap the x and y (f(x)) in the equation.

$y = 7x + 8\\x = 7y + 8\\x-8 = 7y\\y = \frac{x-8}{7}$

We can check that it is an inverse function by using a property of inverse functions:

$f(g(x)) = x$

If we plug in the f(x) function into the variable x of the inverse function, we should end up with x

$y = \frac{(7x + 8) - 8}{7}\\y = \frac{7x}{7} \\y = x\\$

It checks out!

4 0

3 years ago

Find the y-intercept for the parabola defined by this equation y=5x2-x-6

bija089 [108]

Y intercept is -6

Y= 5x^2-X-6
Y= 5(0)^2-0-6
Y= 0-0-6

7 0

3 years ago

What is the domain of function of f(x)=-2x+4x

dem82 [27]

Answer:

Domain= x∉Real numbers

Step-by-step explanation:

4 0

2 years ago

(-4/5) (15/8) (7/3) (-1)

hram777 [196]

Answer:

7/2

Step-by-step explanation:

6 0

2 years ago