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3 years ago

What are the ways to determine if a relation is a function? select EACH correct answer

Mathematics

1 answer:

zzz [600]3 years ago

6 0

Answer:

the two selected are correct.

Step-by-step explanation:

A relation is a function only if it relates each element in its domain to only one element in the range. When you graph a function, a vertical line will intersect it at only one point. You can determine whether each element of the domain is paired with exactly one element of the range. For example, if given a graph, you could use the vertical line test; if a vertical line intersects the graph more than once, then the relation that the graph represents is not a function. The best way to find out whether an equation represents a function or not is by graphing the equation and then applying the vertical line test. Graph the two-variable equation on graph paper. For a straight line this means graphing two or more points on the line and connecting the dots.

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3 years ago

An angle measures 57.2° less than the measure of a supplementary angle. What is the measure of each angle?

vagabundo [1.1K]

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4 years ago

Translate this sentence into an equation

QveST [7]

Answer:

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Step-by-step explanation:

let x = vanessa's savings

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3 years ago

IF AN8 COUNT PACK OF BUNS COST 0.03 CENTS MORE PER BUN THAN A PACK OF 10 COUNT BUNS , ANT THE 8 COUNT IS 0.45 CENTS LESS THAN TH

Svetlanka [38]

So,

Let's calm down and translate this word problem.

The 8-ct. pack costs 0.03 cents more per bun than the 10-ct. pack.

x = cost of 8-ct. pack

y = cost of 10-ct. pack

We now have the equation:

$\frac{x}{8}=\frac{y}{10}+0.03\ cents$

Also, we are told that the 8-ct. pack is 0.45 cents less than the 10-ct. pack.

x = y - 0.45 cents

With these two equations, we can now solve for x and y.

First, substitute y - 0.45 cents for x in the first equation.

$\frac{y-0.45cents}{8}=\frac{y}{10}+0.03\ cents$

Multiply both sides by 80 and simplify.

10(y - 0.45 cents) = 8y + 2.40 cents

10y - 4.50 cents = 8y + 2.40 cents

Subtract 8y from both sides and add 4.50 cents to both sides.

2y - 4.50 cents = 2.40 cents

2y = 6.90 cents

Divide both sides by 2.

y = 3.45 cents

Substitute 3.45 cents for y in the second equation.

x = 3.45 cents - 0.45 cents

x = 3.00 cents

The 8-ct. pack costs 3.00 cents, and the 10-ct. pack costs 3.45 cents.

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3 years ago