Answer:
13) The inverse is g^-1(x) = 2x/7 - 18/7
15) The inverse is f^-1(x) = -x + 3
Step-by-step explanation:
You first have to switch the x and y variables, in this case g(x), and then multiply both sides by 2 to cancel out the denominator value of 2. You now have 2x = 7y + 18. Then subtract 18 from both sides to have 2x - 18 = 7y. To isolate the y, divide both sides by 7. You now have 2x/7 - 18/7.
For this equation, also switch the x and y variables. The equation should be x = -y + 3. Subtract 3 from both sides to isolate the y. Now the problem is -y = x-3. Divide both sides by -1 to cancel out the negative sign in front of the y. The final answer should be y = -x + 3.
