slope = -5
given point is (-1/6,1)
Use point slope formula
y - y1 = m (x - x1)
m = -5 , x1 = -1/6 and y1 =1
Plug in all the values in the formula


Add 1 on boths ides

y intercept is the constant value
Here y intercept is 1/6
62+x=242
x=242-62=180.
So Jenna will have enough money to buy the tablet until 180 weeks.
-6x+9=-5x+5
-x+9=5
-x=5-9
-x=-4
x=4