Answer:
x=15
Step-by-step explanation:
21-6=15
-4x+y=-5x-y=15
x+y=-y=15
x=15
A measurement is an area of number sense that relates to the quantity of ingredients in recipes
It’s 1 because of -8x^4-x^2+2
Let's create a table, and use arbitrary values of x between -3 and 3 (if the solution is not in this interval, we can use another one later). If we call:
We want to find the x's for with f(x) = 0
This is the table:
And now we can evaluate f(x) in each value of x to complete the table:
The table is:
If we use this values and plot them in the cartesian plane.
We get:
And now if we plot a line that connects the points, we get the graph of the quadratic equation:
Since the problem ask us to find the value of x for which f(x) = 0, we can see both in the table and in the graph that this value is x = 2
All functions have a dependent variable. TRUE
All functions have an independent variable. TRUE
The range of a function includes its domain. FALSE
[Range refers to the set of outputs the function produces, domain the set of inputs the function accepts. They don't really have to have anything to do with each other.]
A vertical line is an example of a functional relationship. FALSE
[For a function, each input (x value) maps to at most one output (y value). A vertical line has lots of ys for a single x.]
A horizontal line is an example of a functional relationship. TRUE
[It's a constant function.]
Each output value of a function can correspond to only one input value. FALSE
[A function can have the same output given different inputs, for example f(x)=x^2 has f(1)=f(-1) ]
