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2 years ago

5) If f(x)=x2-x, what is f(-5)? A. -30 B. -20 C. 20 D. 30

1 answer:

7 0

You simply plug it in.

f(x) = x^2 - x
f(-5) = -5^2 - (-5)
f(-5) = -25 - (-5)
f(-5) = -20

hope this was helpful for you.

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Step-by-step explanation:

Slope-intercept form: y = mx + b

Slope formula: $\frac{y2-y1}{x2-x1}$

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(3, -7) = (x1, y1)

(7, 2) = (x2, y2)

To write the equation in slope-intercept form, we need to find the slope(m) and the y-intercept(b) of the equation.

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The slope is $\frac{9}{4}$ .

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