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 one year ago
Which equation describes the four ordered pairs (1,3), (0,1), (2,9), (3,13)?
A. y=2x+1
B. y=4x+1
C. y=4x1
D. y=2x1
 one year ago
Which equation describes the four ordered pairs (1,3), (0,1), (2,9), (3,13)? A. y=2x+1 B. y=4x+1 C. y=4x1 D. y=2x1

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sritama
 one year ago
Best ResponseYou've already chosen the best response.0put the values of x and y in the equations and find in which case 4 of them are satisfying the equation.

kirbykirby
 one year ago
Best ResponseYou've already chosen the best response.2Or there's a more systematic way of doing it:

kirbykirby
 one year ago
Best ResponseYou've already chosen the best response.2They give you the point (0,1) which is dw:1358396550543:dw your yintercept in the formula y = mx+b, so b = 1 Now for the slope, take two points and calculate it using the slope formula: If we take points (1,3) and (0,1):\[m=\frac{(3)(1)}{(1)(0)}= \frac{4}{1}=4\] So, y = 4x+1

kirbykirby
 one year ago
Best ResponseYou've already chosen the best response.2(And I guess you can assume the other points are valid for this equation since there is no option such as "none of the above")

kirbykirby
 one year ago
Best ResponseYou've already chosen the best response.2What sritama told you is perfectly valid as well, but perhaps a bit more time consuming
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