Need on this question
indicate whether the lines are parallel, perpendicular, or neither justify your answer.
x=-1 and y=-1

Answer this question! 30 points and brainliest! only if you know the answer.

Answer asap ill give ! ’ a sample of radioactive material decays over time. the number of grams, y , of the material remaining x days after the sample is discovered is given by the equation y = 10(0.5)^x. what does the number 10 represents in the equation? a. the half-life of the radioactive material, in days b. the amount of the sample, in grams, that decays each day c. the time, in days, it will take for the samples to decay completely d. the size of the sample, in grams, at the time the material was discovered

Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x