Question

Given f(x)=2x+1, find the value of k so that the graph is f(x) +k

Answer 1

Explanation:

37)

line pass through (0,0) → y = 0 when x = 0

y = f(x) + k

y = 2x + 1 + k

0 = 2(0) + 1 + k

0 = 1 + k

k = -1

38)

line pass through (0,5) → y = 5 when x = 0

y = f(x) + k

y = 2x + 1 + k

5 = 2(0) + 1 + k

5 = 1 + k

k = 4

39)

line pass through (0,-3) → y = -3 when x = 0

y = f(x) + k

y = 2x + 1 + k

-3 = 2(0) + 1 + k

-3 = 1 + k

k = -4