Question

What is the y- intercept of function f ?

A. -1
B. 1
C. -2
D. 5​

Answer 1

y intercept = 5

Explanation:

f(x)=5•(1/6)^x

The y intercept is when x =0

Let x =0

f(0)=5•(1/6)^0

= 5* 1 = 5

The y intercept is 5

If the question is

f(x)=5•(1/6)x

although I have never seen the question written this way

The y intercept is when x =0

Let x =0

f(0)=5•(1/6)0

= 5* 0 = 0

The y intercept is 0

Answer 2

B. 1

Explanation:

The y-intercept occurs at x = 0

therefor the applicable function is

f(x) = -x + 1

at x=0

f(0) = -0 + 1

f(0) = 1