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Rufina [12.5K]
2 years ago
15

8R4 Joan was assigned to graph an absolute value function, but she forgot the 4 poi function. However, she remembers the followi

ng the y-int is (0,-7), the vertex is (3,-1). Help Joan to rewrite the original equation that she was given. * 1 Add file​
Mathematics
1 answer:
Rina8888 [55]2 years ago
4 0

Answer:

f(x)= -2|x-3|-1

<u><em>(Hi Jasmine! I just wanted to help you with this question but I might be wrong)</em></u>

Step-by-step explanation:

f(x) = a|x-h|+k

f(x)= a|x-3|-1

-7 = a |0-3| -1

-7 = a |-3| -1 <-- add to -7

-6 = a |-3|

-6 = 3a

-6/3 = a

-2 = a

---------------------------------- -------------------------------------------------

The equation of the absolute value is f(x)= -2|x-3|-1

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4) y = 2x - 7

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First we have to find the slope by using the following formula....

let (3, - 1) be (x_{1}, y_{1} ), let (8, 9) be (x_{2} ,y_{2} ), and m be the slope, then....

m = \frac{y_{2} -y_{1} }{x_{2} - x_{1} } = \frac{9 + 1}{8 - 3} = \frac{10}{5} = 2

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