The difference between 2/5 of a number and 8 is 7/5 of that number

1. 3. can also be expressed as (22/7)

2. -4.5

3. 3.6

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h is the x-coordinate of the vertex

step-by-step explanation:

we have

in this function

the point represent the vertex of the function

so

h is the x-coordinate of the vertex

k is the y-coordinate of the vertex