9514 1404 393
Answer:
- x = 9/2
- x = 5
Step-by-step explanation:
1. Substitute for k(x) and solve.
k(x) = 6x -12
15 = 6x -12 . . . . substitute for k(x)
27 = 6x . . . . . . add 12
27/6 = x = 9/2 = 4 1/2 . . . . . divide by 6
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2. Find f(x) = 7 on the vertical scale. Follow that horizontal line over to the graph. Follow the vertical line at that intersection down to the x-axis. It will be halfway between the lines marked 4 and 6. That is, the x-value is 5.
f(x) = 7 = f(5)
x = 5
