the linear equation y=2x represents the cost y of x pounds of pears. which order pair lies on the graph of the equation? A. (2,4
) B. (1,0) C.(10,5) D. (4,12)
1 answer:
Answer:
A. (2, 4)
Step-by-step explanation:
The ordered pairs represent (x, y). Since you have y =2x, this is the same as ...
(x, 2x)
That is, the second number in the pair needs to be twice the first number in the pair. Since you know your times tables, you know that this is not the case for (1, 0), (10, 5) or (4, 12). Those values of x would give (1, 2), (10, 20), (4, 8).
It is the case that you have (x, 2x) for (2, 4).
The point (2, 4) lies on the graph of y = 2x.
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Answer:
Step-by-step explanation:
In order to solve for a slope, you must in the formula,
<u><em>(In this case, you can choose which point can have the x(1) and y(1) and which can have the x(2) and y(2)</em></u> )
1.) Plug the numbers for x(1), x(2), y(1) and y(2)
2.) Solve and simplify the number, which you should get