Classify the lines as parallel, perpendicular, or intersecting: y=4x-3 y=-1/4 x+7

Write the slope-intercept form of the line that passes through the point (1, 0) and is parallel to x - y = 7. t

An airplane travels at an unknown elevation before it descends 3 miles to an elevation of 15 miles. find the elevation of the plane before its descen.

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.