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3 years ago

Someone help me leran this meth problem

Mathematics

2 answers:

Sergio [31]3 years ago

3 0

Answer:

Step-by-step explanation:

mestny [16]3 years ago

3 0

Answer:

y = -2x + 28

Step-by-step explanation:

We are given the slope and a point on the line so first we use the point-slope form :-

y - y1 = m(x - x1)

Substituting the given values:-

y - 12 = -2(x - 8)

Now convert to the slope-intercept form (which is y = mx + c):-

y = -2x + 16 + 12

y = -2x + 28 (answer)

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we know that f(-2) = 24, namely when x = -2, y = 24, let's see if that's true

$\bf x^3-13x-12=y\implies \stackrel{x = -2}{(-2)^3-13(-2)-12}=y \\\\\\ -8+26-22=y \implies 6=y$

darn!! no dice.... hmmmm wait a second.... 4 * 6 = 24, if we could just use a common factor of 4 on the function, that common factor times 6 will give us 24, let's check.

$\bf 4(x^3-13x-12)=y\implies \stackrel{x = -2}{4[~~(-2)^3-13(-2)-12~~]}=y \\\\\\ 4[~~-8+26-22~~]=y\implies 4[6]=y\implies 24=y \\\\[-0.35em] ~\dotfill\\\\ ~\hfill 4x^3-52x-48=y~\hfill$

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