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Tanya [424]
3 years ago
6

Without sketching the graph of the function, find the maximum value of y = - 5x + 4 over the interval - 4 <= x <= 3. Expla

in how you found this value.
Mathematics
1 answer:
yKpoI14uk [10]3 years ago
3 0

Answer:

y_{max}=24

Step-by-step explanation:

Given function y=-5x+4 is linear function. This linear function represents the straight line on the coordinate plane. The slope of this line is -5. Since the slope is negative, the linear function is decreasing for all x. This means

\text{ if } x_1 f(x_2)

You ar geven the interval -4\le x\le 3. So, the maximum value of the function is at the point x=-4 and the minimum value of the function is at the point x=3.

At x=-4,

y=-5\cdot (-4)+4=20+4=24.

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