1.) Write the equation of the line passing through the two points (-5, 7), (-3, -1).

2.) Write the equation of a line in slope-intercept form perpendicular to y = ½x – 4 and passes through (-5, 3).

2.5: Model Direct VariationHW: p.109-110 (8-22 even, 32, 34)

Ch 2 Test: 2.1-2.5, 2.7: Next week Friday

y = ax, where a is the constant of variation. ◦y varies directly with x.

1.) y = ½x 2.) y – 12 = 5x

3.) 5y = x 4.) y =x

3

8.) x = 3, y = -9

9.) x = 6, y = -2

X 3 6 9 12 15

Y -1 -2 -3 -4 -5

X 1 2 3 4 5

Y 6 7 8 9 10

X -5 -4 -3 -2 -1

Y 20 16 12 8 4