Question

Using Graph find the Zeroes of y=x²-3x-4​

Answer 1

$\red{ p(−4)=(−4) {}^{2} +3×−4−4 }\\ \green{ =16−12−4=0} \\ \purple {p(1)=(1) {}^{2} +3×1−4} \\ \orange { =1+3−4=0}$