Which of the following graphs represents a function

1 answer:

7 0

Where are the graphs? a function is when every input is paired with exactly one output(every x value must have exactly 1 y value). the vertical line test helps determine a function, a vertical line can’t intersect a graph at more then one point, if it does intersect in more then 1 point then it’s not a function

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20. Write an expression: Alexis has $10 less than twice the amount that David has. If David has

Tamiku [17]

Answer:

2x - 10

Step-by-step explanation:

'x' = amount David has

Alexis = 2x - 10

8 0

3 years ago

Consider the system of equations:

AVprozaik [17]

$\large{\underline{\underline{\pmb{\sf {\color {blue}{Solution:}}}}}}$

Since, we know that in Elimination method we have to first the value of "x" or either "y". For that we have to multiply a number which makes the both equation's "x" or "y" equal so that we cut cancel it and find the solution.

Here's an example:

Like, in here

Equation 1: - 2x + 3y = 9

Equation 2: - 8x - 7y = 10

We can see that in "Equation 1" the first number is "- 2x" and in "Equation 2" the first number is "-8x". So, what we do in Elimination method is that we have to make the first number of both the equations equal or same.

Eg:

- 2x + 3y = 9.

- 8x + 7y = 10--(ii)

Now,we can see that in "Equation 2" the first number is "8x" whereas in "Equation 1" the first number is "-2x". We have to multiply with any number that makes the both the first number of equation is same.