Answer:
answer is A
Step-by-step explanation:
(3+5x+1) (
−2x+4)
=(3+5x+1)(
+−2x+4)
=(3)(
)+(3
)(−2x)+(3
)(4)+(5x)(
)+(5x)(−2x)+(5x)(4)+(1)(
)+(1)(−2x)+(1)(4)
=3−6
+12
+5
−10
+20x+
−2x+4
=3 −
+ 3
+ 18x +4
PLZ HURRY IT'S URGENT!!
2 answers:
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Answer:
Domain: {-4, -2, 1, 2, 4}
Range: {-4, -2, -1, 1, 4}
The relation is a function.
Step-by-step explanation:
A <u>relation</u> is any set of ordered pairs, which can be thought of as (input, output).
A function is a <em>relation</em> in which no two ordered pairs have the same first component and different second components.
Remember that a function can only take on <u>one output for each input</u>. We cannot plug in a value and get out two values.
The Vertical Line Test allows us to know whether or not a graph is actually a function. If a vertical line intersects the graph in all places <u><em>at exactly one point</em></u>, then the relation is a function.
I did the Vertical Line Test on your given graph. As you can see from the attached screenshot, each vertical line crosses the graph only once. Therefore, the given relation is a function.
The <u><em>domain</em></u> of the given relation is the set of x-values, while the <em><u>range</u></em> is the set of y-values. You'll have to list the ordered pairs in order to determine the domain and range of the given relation.
Relation: {(-4, -1), (-2, 1), (1, -2), (2, 4), (4, -4)}.
Domain: {-4, -2, 1, 2, 4}
Range: {-4, -2, -1, 1, 4}
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