Question

The function f(x) = -0.25x + 5 models the height of a candle x seconds after it is lit. Explain the
meaning of the y-intercept of this function?

Answer 1

Answer:

The y-intercept is the height of the candle before it was lit

Step-by-step explanation:

The y-intercept is at 0 on the x-axis meaning that not time has passed, so the candle is at its original height

Answer 2

The y-intercept of this function is 5.

What is y-intercept?

'The point where a line or curve crosses the y-axis of a graph.'

According to the given problem,

In the function,

f(x) = - 0.25x + 5 is in the form of y = mx + c,

Slope (m) = - 0.25

Y-intercept (c) = 5

Now, we know c is the y-intercept. There are basically two intercepts, x-intercept and y-intercept. The point where the line crosses the x-axis is the x-intercept and the point where the line crosses the y-axis is the y-intercept.

In this equation, the line with a slope of of -0.25 crosses the y-axis at point 5 on the y-axis.

Hence, we can conclude, in this function, the value of y-intercept is 5.

Learn more about y-intercept here: https://brainly.com/question/1354826

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