Let D be the domain and let ƒ be the possible function. Determine if the relation is an example of a function. D = {x| x is a person’s social security number}
ƒ(x) = the person’s name

Yes. One input results in one output.

No. At least one input results in two outputs.

Yes. One output results in one input.

No. At least one output results in two inputs.

Which of the fallowing best completes the sequence 12,8,5, a) 1 b) 2 c)4 d)0

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

City l has a temperature of −3 °f. city m has a temperature of −7 °f. use the number line shown to answer the questions: number line from negative 8 to positive 8 in increments of 1 is shown. part a: write an inequality to compare the temperatures of the two cities. (3 points) part b: explain what the inequality means in relation to the positions of these numbers on the number line. (4 points) part c: use the number line to explain which city is warmer. (3 points)