Answer:
((2,-5),(4,-5),(6,2),(8,3))
((-1,5),(3,5),(6,5),(9,5))
((0,3),(4,2),(-1,7),(0,3))
Step-by-step explanation:
For a set of ordered pairs to be a function, no x value can have two different y values.
In the three functiosn above, every x value has one and only one y value corresponds with it.
((0,3),(4,2),(-1,7),(0,3)) Is still a function because when x is zero, there is only one y value that corresponds with it, which is 3.
Upward
Use a graphing calculator
A
Given 2 secants from a point outside the circle.
Then the product of the external part and the entire secant of one secant is equal to the product of the external part and the entire secant of the other secant, that is
(x + 1)(x + 1 + 11) = (x + 4)(x + 4 + 1)
(x + 1)(x + 12) = (x + 4)(x + 5) ← expand both sides
x² + 13x + 12 = x² + 9x + 20 ← subtract x² + 9x from both sides
4x + 12 = 20 ( subtract 12 from both sides )
4x = 8 ( divide both sides by 4 )
x = 2 → A
the correct answer is c in usa test prep
