Will mark as
what is the missing step in the given proof?
a.
statement: m∠4 = m∠15
reason: substitution property of equality
b.
statement: m∠4 + m∠8 = 180°
reason: definition of supplementary angles
c.
statement: m∠4 = m∠16
reason: transitive property of equality
d.
statement: ∠15 and ∠8 are supplementary.
reason: transitive property of equality

Is there a direction u in which the rate of change of f(x,y)equals=x squared minus 3 xy plus 4 y squaredx2−3xy+4y2 at p(1,2) equals 14? give reasons for your answer. choose the correct answer below. a. no. the given rate of change is smaller than the minimum rate of change. b. no. the given rate of change is larger than the maximum rate of change. c. yes. the given rate of change is larger than the minimum rate of change and smaller than the maximum rate of change.