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Mrather
Group Title
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
 one year ago
Mrather Group Title
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
 one year ago

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Callisto Group TitleBest ResponseYou've already chosen the best response.0
Explanations?
 one year ago

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

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

kirbykirby Group TitleBest ResponseYou've already chosen the best response.2
They 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
 one year ago

kirbykirby Group TitleBest 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")
 one year ago

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