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Pomskis2341
12.10.2019 •
Mathematics
Andrew can paint a 15 ft. by 18 ft. wall in 35 minutes. he had to paint ten of these walls in his house. if he started at 1: 00 p.m., what time will andrew finish?
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Ответ:
Aye Sir!
Ответ:
Step-by-step explanation:
The formula for the absolute value function in vertex form is:
f(x)= a|x – h| + k
where:
(h, k) = vertex
a = determines whether the graph opens up or down.
h = determines how far left or right the parent function is translated.
k = determines how far up or down the parent function is translated.
Given the value of the vertex, (-1, 3), substitute its values into the vertex form:
f(x)= a|x – h| + k
f(x)= a|x + 1| + 3
Next, use the other given point, (4, 1) to solve for "a":
1= a|4 + 1| + 3
1 = a|5| + 3
1 = 5a + 3
Subtract 3 from both sides:
1 - 3 = 5a + 3 - 3
-2 = 5a
Divide both sdies by 5:
Therefore, the equation of an absolute value function is:![f(x) = -\frac{2}{5} |x + 1| + 3](/tpl/images/2529/0500/307ef.png)