Question

John is 70 years younger than Sharon. Sharon is 4 times as old as John.If you let s = Sharon's age and j = John's age, then the problem can be represented by a system of equations. Which of thefollowing shows a graph of this system and the solution to this problem?

Answer 1

The system of equations are;

J = S - 70 .....eqn(1)

S = 4J

J = 1/4S ......eqn(2)

The only graph with negative J-intercept is the graph in the 4th option.

So, the correct answer is the graph in the last option.