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​a(0.3−y)+1.1+2.4x ​(y−1.2) ​​ ​=0 ​=−1.2(x−0.5) ​​ consider the system of equations above, where aaa is a constant. for which value of aaa is there exactly one (x, y)(x,y)left parenthesis, x, comma, y, right parenthesis solution where y = 1.3y=1.3y, equals, 1, point, 3? round your answer to the nearest tenth.

Answer :

W0lf93
The idea here is to use both equations to solve for “a” using the provided “y” value. In this case we can use the y=1.3 to solve for “x” in the second equation (yâ’1.2) = -1.2(x-0.5). Then, we can plug-in the value for “x” from the second equation into the first equation a(0.3â’y) + 1.1 + 2.4x = 0. The answer for “a” is 21/10=2.1.

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