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1 vote
Which ordered pair is the on the graph of the equation 2x+5y=4?

A.(7,-2)
B.(0,-1)
C.(0,1)
D. (3,-2)

1 Answer

3 votes
To investigate which of the choices satisfy the equation, substitute the values of the abscissas into the equation and solve for y. See if the value of y calculated is equal to the value of the ordinate of the point.

A. (7, -2) ; (2)(7) + 5y = 4 ; y = -2 EQUAL

B. (0, -1) ; (2)(0) + 5y = 4 ; y = 0.8 NOT EQUAL

C. (0, 1) ; (2)(0) + 5y = 4 ; y = 0.8 NOT EQUAL

D. (3, -2) ; (2)(3) + 5y = 4 ; y = -0.4 NOT EQUAL

Thus, the answer is letter A.
User Eillarra
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