Ask a New Question

Question

9. If f is a linear function such that f(-1) = 5 and f(2) = -1, then f(x + 1) =
A. -2x + 1
B. -2x + 3
C. x + 1
D. -2x + 2
E. 2x + 1
11 years ago

Answers

Steve
use the two-point form of a line and you can see that

(y-5)/(x+1) = (5+1)/(-1-2)
y-5 = -2(x+1)
y = -2(x+1)+5

So,
y(x+1) = -2((x+1)+1)+5
= -2(x+2)+5
= -2x-4+5
= -2x+1
11 years ago

Related Questions

a linear function has the same y-intercept as x+4y=12 and its graph contains the point(5.4).find the... If f(x) is a linear function, f(-4)=0. and f(3) = -2, find an equation for f(x). Linear and Non-Linear Function examples what function is linear? y = 1/x+2 y= x + 2 y = 1/x+2 y = x+2/x - 2 What is the linear function rule for this table? X: -2, -1, 0, 1, 2 Y: -7, -4, -1, 2, 5 A) y =... Which linear function has a greater unit rate, f(x) or g(x)? f(x) = 3.5x + 1 x: -2, -1, 0, 1, 2 g... Which linear function has a negative slope, f(x) or g(x)? f(x) = 6 - 7x x: -2, -1, 0, 1, 2 g(x):... Linear Function 2: x y 0 2 5 42 Compare Linear Function 1 with Linear Function 2. Which one has... Linear function A and linear function B both have the same input values as shown below. Why will the...
Ask a New Question
Archives Contact Us Privacy Policy Terms of Use