Determine the slope and y-intercept

-6x-5y=15

Aline passes through the point (2, -4) and has a slope of 0, what is the equation of the line? plz fast

Ade and abc are similar. which best explains why the slope of the line between points a and d is the same as the slope between points a and b?

Scores on the cognitive scale of the bayley-scales of infant and toddler development range from 1 to 19, with a standard deviation of 3. calculate the margin of error in estimating the true mean cognitive scale score, with 99% confidence, if there are 12 infants and toddlers in a sample.