The correct answer would be : Slope : 3/2 and Y-Intercept : −3
I hope that this helps you !
If you have any questions about slope point formula...feel free to leave comments :)
When Serena is 10, her mom is 3*10=30. Her mom is 20 years older than Serena.
If her mom's age divided by half is equal to Serena's, then she will be twice as old as Serena.
20 + 20 = 40
20 * 2 = 40
Serena will be 20, her mom will be 40.