When Angel left his house in the morning, his cell phone battery was partially charged. Let B represent the charge remaining in Angel's battery, as a percentage, t hours since Angel left his house. A graph of B is shown below. Write an equation for B then state the x-intercept of the graph and determine its interpretation in the context of the problem.

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akposevictor akposevictor · Answer 1 · 2022-12-02T13:31:49+01:00

The equation of the function is: B = -5x + 30

X-intercept is 6, which means after 6 hours, the battery is totally drained.

The x-intercept of a function is the point on the x-axis that the line intercepts, which is the value of x when y = 0.

Find the slope of the function (m):

Slope (m) = change in B / change in t = (20 - 10) / (2 - 4)

Slope (m) = 10/-2

Slope (m) = -5

The y-intercept (b) = 30.

Write the equation of the function by substituting m = -5 and b = 30 into B = mt + b:

B = -5x + 30

The x-intercept of the function is 6, which represents the hours it took for the whole battery to drain.

Learn more about the x-intercept of a function on:

https://brainly.com/question/3951754

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