Answer:
1.)
slope: -10
y-intercept: 60
equation:

2.)
slope:

y-intercept: 0 (the line passes through the origin)
equation:

Step-by-step explanation:
To find your slope you can use the equation
, plugging in the designated numbers from two ordered pairs you select from the chart.
Your y-intercept is the value found at y whenever x is equal to 0.
For your equation, you simply place your slope in front of x and add on your y-intercept.