Q. Does (2,−1) make the equation y=x2−4x+−3 true?Choices:(A) yes(B) no
Substitute x-value into equation: Substitute the x-value from the point (2,−1) into the equation y=x2−4x−3.Calculation: y=22−4(2)−3=4−8−3=−7.
Compare calculated y-value: Compare the calculated y-value with the y-value from the point (2,−1).The calculated y-value is −7, but the y-value from the point is −1.
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