3 years ago

Leroy used the formula to find the slope of the line graphed below.

Mathematics

1 answer:

Lelechka [254]3 years ago

5 0

Rise is negative, run is positive

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If f(x)=-4x^2-6x-1 and g(x)=-x^2-5x+3, fine (f-g)(x)

NeX [460]

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$\large\boxed{(f-g)(x)=-3x^2-x-4}$

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$f(x)=-4x^2-6x-1,\ g(x)=-x^2-5x+3\\\\(f-g)(x)=(-4x^2-6x-1)-(-x^2-5x+3)\\\\(f-g)(x)=-4x^2-6x-1-(-x^2)-(-5x)-3\\\\(f-g)(x)=-4x^2-6x-1+x^2+5x-3\qquad\text{combine like terms}\\\\(f-g)(x)=(-4x^2+x^2)+(-6x+5x)+(-1-3)\\\\(f-g)(x)=-3x^2-x-4$

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It cost Naomi $7.70 to send 154 text messages how many text messages did she send if she spent $5.25

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to check work:

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8 0

3 years ago

Leroy used the formula ￼ to find the slope of the line graphed below.

Leroy used the formula to find the slope of the line graphed below.