Question

Given f(x) and g(x) = f(x) + K, use the graph to determine the value of k.

6
5
4
g(x)
3
2
1
3
7
6
8
-4
-3
-2
4
-1
0
1
2
- 1
f(x)
-3
-4
-5
-6

Answer 1

f(x)=(4,-1),g(x)=(3,3),K=6

Answer 2

Take y intercepted points of both lines.

• f(x)=(0,-2)
• g(x)=(0,3)

Now

`\\ \sf\longmapsto f(x)+k=g(x)`

`\\ \sf\longmapsto -2+k=3`

`\\ \sf\longmapsto k=3+2`

`\\ \sf\longmapsto k=5`