Answer:
Therefore, the only ordered pair that is a valid solution is B)
Step-by-step explanation:
In order for a pair to be a solution of a function, the equation must be valid when said point is used in it. We will check for each point:
A) (-1, 4)
f(x) = 3*x - 1
4 = 3*(-1) - 1
4 = -3 -1
4 = -4 (invalid)
B) (-1, -3)
f(x) = 3*x - 1
-3 = 3*(-1) - 1
-3 = -3 -1
-3 = -4
C) (-1, -4)
f(x) = 3*x - 1
-4 = 3*(-1) - 1
-4 = -3 -1
-4 = -4 (valid)
D) (-1, 2)
f(x) = 3*x - 1
-1 = 3*(2) - 1
-1 = 6 -1
-1 = 5 (invalid)
Answer:
i thought it was 5 maybe not
Step-by-step explanation:
Try this inequality with 0 as the right side.
-x > 0
According to John, we multiply both sides by -1, and the inequality sign does not change direction, so we get this
x > 0
Let's use a number for x that makes the original inequality true.
Let x = -2.
-x > 0
-(-2) > 0
2 > 0
As you can see, -2 does work on the original equation.
Now let's try -2 in John's solution.
x > 0
-2 > 0 which is a false statement.
Now let's solve it again, but we will reverse the inequality symbol when we multiply both sides by -1.
-x > 0
x < 0
Try x = -2.
-2 < 0 which is true
Now it works.
John is incorrect.
If you multiply or divide an equation by a negative number, even if one of its sides is 0, you still must change the direction of the inequality symbol.
Answer: y=mx+b
Step-by-step explanation: