3 years ago

What is the slope of (9,6) (21,14)

Mathematics

2 answers:

alisha [4.7K]3 years ago

6 0

You plug in (9,6) and (21,14) to the slope formula (m= y2-y1 / x2-x1) and get m= 2/3

Delvig [45]3 years ago

5 0

You would write m= y2 -y1/x2-x1 so the answer would be 8/12

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What is the inverse of the function f(x) =1/4 x – 12?

forsale [732]

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I neeeeeedddd help pls

Gre4nikov [31]

I CAN HELP YOUUUUUUUUUUUUUUUUUU!!!!!!!!!!!!!!!!!!1

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{ y = - 4x-23-4x-3y=13

sleet_krkn [62]

For this case we have the following system of equations:

$y = -4x-23\\-4x-3y = 13$

We solve by the substitution method:

We substitute the first equation in the second equation:

$-4x-3 (-4x-23) = 13$

We apply distributive property considering that $- * - = +:$

$-4x + 12x + 69 = 13\\8x + 69 = 13$

We subtract 69 from both sides of the equation:

$8x = 13-69\\8x = -56$

We divide by 8 on both sides of the equation:

$x = \frac {-56} {8}\\x = -7$

We look for the value of the variable y:

$y = -4 (-7) -23\\y = 28-23\\y = 5$

Thus, the solution of the system is $(x, y): (-7,5)$

Answer:

$(x, y): (-7,5)$

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3 years ago

Can you help me in rule? <br><br> I am doing it right?

forsale [732]

The rule would be ~y=4x+3~

Hope this helps

Have a great day/night

Feel free to ask any questions

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Answer:

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