A system of equations is given below. y = negative 3 x + 6 and y = 6 minus 3 x

Which of the following statements best describes the two lines?
A) They have different slopes and different y-intercepts, so they have no solution.
B) They have different slopes and different y-intercepts, so they have one solution.
C) They have the same slope and the same y-intercept, so they have no solution.
D) They have the same slope and the same y-intercept, so they have infinitely many solutions.

Someone answer this asap for gabriella uses the current exchange rate to write the function, h(x), where x is the number of u.s. dollars and h(x) is the number of euros, the european union currency. she checks the rate and finds that h(100) = 7.5. which statement best describes what h(100) = 75 signifies? a. gabriella averages 7.5 u.s. dollars for every 100 euros. b. gabriella averages 100 u.s. dollars for every 25 euros. c. gabriella can exchange 75 u.s. dollars for 100 euros. d. gabriella can exchange 100 u.s. dollars for 75 euros.