What is the equation of the line, in slope-intercept form, that passes through (3, -1) and (-1, 5)?

y = -3/2*+7/2
2y = -3x + 7
2x + 3y - 7 = 0

When only separate discreet points are graphed it is called?

What is the slope of the line passing through the points (-5, 7) and (-3,5)?

The polynomial 2x3 + 9x2 + 4x - 15 represents the volume in cubic feet of a rectangular holding tank at a fish hatchery. the depth of the tank is (x – 1) feet. the length is 13 feet.