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2 years ago

Is this a function graph

Mathematics

1 answer:

ELEN [110]2 years ago

8 0

Yes it is a function graph

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What is the inverse of the function f(x) = 2x + 1?

Alexandra [31]

Answer:

$f^{-1}$ (x) = $\frac{x-1}{2}$

Step-by-step explanation:

let y = f(x) and rearrange making x the subject, that is

y = 2x + 1 ( subtract 1 from both sides )

y - 1 = 2 ( divide both sides by 2 )

$\frac{y-1}{2}$ = x

Change y back into terms of x and let x = $f^{-1}$ (x), thus

$f^{-1}$ (x ) = $\frac{x-1}{2}$

6 0

3 years ago

The slope of the line that passes through the points (-10,y) and (5, 2) is 2/5. What is the value of y?

Murrr4er [49]

Answer:

C, -4

Step-by-step explanation:

slope=change in y/change in x

$\frac{2 - y}{5 - ( - 10)} = \frac{2}{5}$

$\frac{2 - y}{5 + 10} = \frac{2}{5}$

multiply both sides by 2/5

$2 - y = \frac{2}{5} (5 + 10)$

simplify the right side. 2/5 × 5 = 2 and 2/5 × 10 = 4

$2 - y = 2 + 4$

$2 - y = 6$

bring y to the other side by adding y on both sides

$2 = 6 + y$

subtract 6 on both sides

$2 - 6 = y$

so y is -4

7 0

2 years ago

PLEASE HELP ILL GIVE BRAINLIEST

iris [78.8K]

Answer: it means simple interest

Step-by-step explanation it means simple interest because I means interest

4 0

2 years ago

Find the cosine of ∠J.

Luden [163]

Answer:

$\cos = \frac{base}{hypotenuse} = \\ \cos(j) = \frac{ \sqrt{29} }{ \sqrt{94} } = \sqrt{ \frac{29}{94} } \\ answer = \sqrt{ \frac{29}{94} }$

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2 years ago

Question:<br> a=-4,(3,0),(-8,0)

s2008m [1.1K]

Answer:

the y intercept are 0,0 the x intercepts are -8 '3

Step-by-step explanation:

remember solpe equal rise over run an m = x2 - x1

over

y2 - y1

8 0

2 years ago