Answer:
Question 1: Correct
Question 2: Incorrect
Question 3: Correct
Question 4: Correct
Question 7: Correct
Explanation:
Question 1: Correct. y = 9 represents a horizontal line, with a zero slope.
Question 2: Incorrect. The given states that the slope is 3. Hence, you're left with two options: either C or D. Substituting (-3, -2) into the given equations:
Option C: y = 3x - 2
-2 = 3(-3) -2
-2 = -9 - 2
-2 = -11 (false statement). This means that (-3, -2) is not a solution to this equation.
Option D: y = 3x + 7
-2 = 3(-3) + 7
- 2 = -9 + 7
-2 = -2 (True statement). Therefore, Option D is the correct answer for Question 2.
Question 3: Correct. The equation x = 3 represents a vertical line.
Question 4: Correct. The rate of increase is 5,000/2 = 2,500.
Question 7: Correct. The domain is the set of inputs (or x-values) of a given relation. The domain of the given relation is {-2, 0, 3, 4}.