Which of the following reasons could be used to correctly complete the proof? Select all that apply. Question 3 options:

congruence of angles is reflexive

congruence of angles is transitive

congruence of angles is symmetric

definition of congruent triangles

vertical angles are congruent

3.4 pizzas

step-by-step explanation:

given is a scatter plot showing number of pizzas sold during weeks for different issues of coupon

y represents number of pizzas sold and x number of coupons issued

y is marked verticaly and x horizontally

the trend line is given as

y =3.4x+43

this says that even when no coupon is issued pizzas sold will be 43

and rate of change of pizza sold for 1 unit of coupon = slope = 3.4

i.e. when x increases by 1 unit y increases by 3.4 units

hence for each additional coupon issued 3.4 pizzas more will be sold

answer: a.   one is a factor of every whole number since every number is divisible by itself.