What is the equation of the line that passes through the points (−2, 1) and (1, 10)?

a.3x − y = −7

b.3x − y = −5

c.3x − y = 5

d. x + 3y = −5

What is the approximate circumference of the circle shown below?

3-12. write each answer with a reasonable number of figures. find the absolute uncertainty and percent relative uncertainty for each answer. (a) [12.41 (±0.09) + 4.16 (±0.01)] x 7.068 2 (±0.000 4) =? (b) [3.26 (±0.10) x 8.47 (±0.05)] - 0.18 (±0.06) =? (c) 6.843 (±0.008) x 104 + [2.09 (±0.04)- 1.63 (±0.01)] =?

Sketch one cycle if the cosine function y=2cos2theta