What is the midpoint of -5,2 and 1,5

Josephine has a great garden with and area of 2x2 + x - 6 square feet

Find the equation of the trend line (line of best fit). show your work i'm using the points (34,76) (42,91)

1. ∠1 is complementary to ∠2 and ∠3 is complementary to ∠2. subtraction property of equality 2. m∠1 + m∠2 = 90 and m∠3 + m∠2 = 90 substitution 3. m∠1 + m∠2 = m∠3 + m∠2 definition of complementary 4. m∠1 = m∠3 given