Q. Is (1,−7) a solution to the equation y=7x2+−7x−9?Choices:(A) yes(B) no
Substitute x=1: To determine if (1,−7) is a solution, substitute x=1 and y=−7 into the equation and check if the equation holds true.Calculation: Substitute x=1 into y=7x2−7x−9.y=7(1)2−7(1)−9=7−7−9=−9.
Calculate y: Now, compare the calculated y-value with the y-value from the point (1,−7). The calculated y-value is −9, but the given y-value is −7. Since −9=−7, the point (1,−7) does not satisfy the equation.
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