By definition of ,
and by definition of ,
which is undefined if are supposed to be real-valued functions. If they're complex-valued, then and .
Answer:
numbef 1 false because one dot equals two students
number 2 flase because all the dots add up to 21 and for eight students there are 4
number 3 true because the amount is eight students and on 7 inches the are four students
you have on your own or just share your thoughts about it in the comments then i can come up with something.
Answer:
f(-1) = 3
Step-by-step explanation:
f(-1) means the value of y at x = -1.
So what's the value of y at x = 1?
First, focus on the graph and look at x = -1.
Next, see which y-value does graph pass through when x = -1.
Looks like the graph passes y = 3 when x = -1
Thus, f(-1) = 3
Answer:
y=2 x and y=-2x ONE
y=-x - 2 and y = -x - 6 NONE
y = 9x - 1 and y = x + 9 ONE
y = 3x + 4 and 2y = 6x + 8 INFINITE
y=-3 and x = -6 ONE
Explanation:
Any two equations (with y value isolated, meaning y has no coefficient) that have the same slope will have no solutions because they are parallel. Parallel lines never meet. For example:
y=-x - 2 and y = -x - 6
They both have a slope of -1. The slope is the number attached to the "x".
If two equations are equivalent, they will have infinite solutions. Equivalent equations can be found when a whole equation is multiplied or divided by a number. For example:
y = 3x + 4 and 2y = 6x + 8
When you double every term in the first equation, it becomes:
2y = (2)3x + (2)4
It's the same as 2y = 6x + 8
.
Any other case will have one solution.