Answer:
The graph of y=5 is a horizontal line. The point (-4, 5) lies on the lines.
Step-by-step explanation:
This is horizontal because 5 on the y axis is always going to stay the same. For any x value, the y value is 5. Therefore, (-4, 5) is part of that line.
Answer:
15
Step-by-step explanation:
Given that the x- intercepts are x = - 3 and x = - 5
Then the factors are (x + 3) and (x + 5)
f(x) is then the product of the factors, that is
f(x) = (x + 3)(x + 5) ← expand factors using FOIL
f(x) = x² + 8x + 15 ← constant term is 15
Answer:
80%
Step-by-step explanation:
Answer:
Step-by-step explanation:
um that question doesnt make any sense....
Answer:
Step-by-step explanation:
Let x represent the number of spelling questions in the test.
Let y represent the number of vocabulary questions in the test.
Mrs morals wrote a test with 15 questions covering spelling and vocabulary. This means that
x + y = 15
Spelling questions (x) are worth 5 points and vocabulary questions (y) are worth 10 points. The maximum number of points possible on the test is 100. This means that
5x + 10y = 100 - - - - - - - - - - - 1
Substituting x = 15 - y into equation 1, it becomes
5(15 - y) + 10y = 100
75 - 5y + 10y = 100
- 5y + 10y = 100 - 75
5y = 25
y = 25/5 = 5
x = 15 - y = 15 - 5 = 10
