As you see in the picture, there are two lines that could maybe represent two linear functions. However, this is not true because of the solid point and the hollow point. This is an inequality equation that has points of discontinuity.
Points of discontinuity are breaks in the graph that are a result of an undefined point when the f(x) is substituted with a point of x that is not part of the solution. So, technically, the graph is made from one rational expression.
So, when it says f(-2), this is the y-value at x=-2. That means f(-2)=2, f(0)=3 and f(4)=-1. Specifically, there are two points at x=0, but we take the solid point only.
Answer:
according to theorm 8 of basic geometry the answer is 6
The number of kids in your group is 12.
Step-by-step explanation:
Given,
Number of people = 20
Cost of each kid ticket = $4
Cost of each adult ticket = $6
Total spent = $96
Let,
x be the number of kids ticket
y be the number of adult ticket
According to given statement;
x+y=20 Eqn 1
4x+6y=96 Eqn 2
Multiplying Eqn 1 by 4
Subtracting Eqn 3 from Eqn 2
Dividing both sides by 2
Putting y=8 in Eqn 1
The number of kids in your group is 12.
Keywords: linear equation, elimination method
Learn more about elimination method at:
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Answer:
for a. you will first solve 5x²-2x+6 with
x=-b ± ✓b²-4ac
----------------
2a
then put the two answers you will get into a bracket then multiply it with 1/2x - 1\4
then write in form of dis :- A ×10^n
Step-by-step explanation:
b. the two products are not the same
Answer:
-2a -12
Step-by-step explanation:
a minus * a plus is a negative therefore -12
