How do i solve this answer with slope -axis and y-axis

For slope you may find rise and run . for the x-intercept you may find the number in the point of horizontal line. for the y-intercept same as x-intercept but look at the vertical

Agc and bgd are vertical angles

If you need an equation, it would be y=2x+8, y would be how long it grew, x being weeks.if you need how long he was asleep, it would be 4 weeks if he started with no beard, the equation would be x=8÷2if he did have a beard before hand, the equation would be 2w+x=8