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MA_775_DIABLO [31]
3 years ago
15

Find the inverse of f(x) = -4+7/2x

Mathematics
1 answer:
-Dominant- [34]3 years ago
6 0

Answer:

2/7x + 8/7

Step-by-step explanation:

f(x) = -4 + 7/2x

y = -4+7/2x

Exchange x and y

x = -4 +7/2y

Solve for y

Add 4 to each side

x+4 = -4+4 +7/2y

x+4 = 7/2y

Multiply each side by 2/7

2/7(x+4) = 2/7 * 7/2y

2/7(x+4) = y

2/7x + 8/7

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A line passes through (3, -2) and (6,2). Write an equation for the line in point-slope form.
snow_lady [41]

Answer:

4x - 3y -18 = 0 or y = 4x/3 - 6

Step-by-step explanation:

We will have to find the slope of the line first

The formula for slope:

m =\frac{y_{2}- y_{1} }{x_{2} -x_{1} } \\m= \frac{-2-2}{3-6}\\ =\frac{-4}{-3}\\ =\frac{4}{3}

The standard form of equation of a line is:

y = mx + b

We know m,

So the equation will be:

y= \frac{4}{3}x+b

We have to find the value of b, for that we will put any one of the point in the equation

So, putting (6,2)

2 = 4/3 * 6 + b

2 = 8 +b

b = -6

Putting the value of m and b in the standard form of equation of line,

y = mx + b\\y = \frac{4}{3}x+(-6)\\y = \frac{4}{3} x - 6\\Multiplying\ both\ sides\ by\ 3\\3y = 4x - 18\\4x - 3y -18 = 0 ..

7 0
3 years ago
Lou eat 6/8 of a pizza. what fraction of the in simplest form, Is left over?
vagabundo [1.1K]
If he ate 6/8 of the pizza, that means 2/8 is left.
2/8 simplify it, by dividing it by 2 and your answer is...
IT'S 1/4
3 0
3 years ago
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Read the caption! And pls help me :))
alukav5142 [94]

Answer:

ASA

Step-by-step explanation:

If 2 angles and the included side of one triangle are congruent to 2 angles and the included side of the other triangle, then the triangles are congruent.

The included side is the side between the vertices of the 2 triangles.

Here

∠ S = ∠ W ( 1 angle )

∠ R = ∠ X ( 2 angles )

RS = XW ( side between the 2 angles )

Thus the 2 triangles are congruent by the ASA postulate

8 0
3 years ago
What speed is a car traveling if it goes 240 miles in 4 hours? 60 miles per hour 40 miles per hour 80 miles per hour 30 miles
Lemur [1.5K]

Answer:

60 miles per hour

Step-by-step explanation:

Use speed = distance / time

Speed = 240 / 4

240 / 4 = 60

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8 0
3 years ago
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Please help solve with step by step answer : 15 divided (-5) - (-10) <br> Thanks
ELEN [110]

Answer:

3

Step-by-step explanation:

First, simplify (-5) - (-10).

-5 + 10 = 5

So, 15 divided by 5 is 3

8 0
3 years ago
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