Question

PLEASE ANSWER ASAP!

The function f(x) is graphed on the coordinate plane.

What is f(−1) ?



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f(−1)
=

Answer 1

f(-1) = 3

Explanation:

See the graph shown in the attached file with the given question.

The graph passes through (0.5,0) point on the X-axis and (0,1) point on the Y-axis.

So, the length of the X-intercept is 0.5 and that of Y-intercept is 1.

Hence, the equation of the straight line graph is

`(x)/(0.5) +(y)/(1) =1` {Using the intercept form}

⇒ 2x + y = 1 ....... (1)

Now, y = f(x) = 1 - 2x

Hence, f(-1) = 1 - 2 ( - 1 ) = 3 (Answer)