1. a line goes through the points (8,9) and (-2,4).

a: what is the slope?
b: write the equation of the line in point-slope form.
c: write the equation of the line in slope-intercept form.
d: graph the line (or just answer with the coordinates for it)

2. graph the system of inequalities: -2x+3y> 3 and 4x - 3y< 15

a. solve each inequality for “y=“.
b. graph each inequality
c. shade the overlap of the 2 inequalities

Farmers know that driving heavy equipment on wet soil compresses the soil and injures future crops. here are data on the "penetrability" of the same type of soil at two levels of compression. penetrability is a measure of how much resistance plant roots will meet when they try to grow through the soil. compressed soil 2.85 2.66 3 2.82 2.76 2.81 2.78 3.08 2.94 2.86 3.08 2.82 2.78 2.98 3.00 2.78 2.96 2.90 3.18 3.16 intermediate soil 3.17 3.37 3.1 3.40 3.38 3.14 3.18 3.26 2.96 3.02 3.54 3.36 3.18 3.12 3.86 2.92 3.46 3.44 3.62 4.26 use the data, omitting the high outlier, to give a 95% confidence interval for the decrease in penetrability of compressed soil relative to intermediate soil. compute degrees of freedom using the conservative method. interval: to