The slope of the line below is 1. Write the point-slope equation for the line using the coordinates of the labeled point.
(7, 8)

When eating out, record the total cost of your meal (before tip) and the tip that you left. determine the percent of the cost of the meal that you left as a tip.

Aline has a slope of 1/4 and passes through point (0.4,-1/2). what is the value of the y-intercept?

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?