7. For a and b, write an equation in slope-intercept form that meets the given
criteria.

a. A negative slope and passes through the
origin

b. Slopes upward from left to right and has a
y-intercept below the x-axis.

Asurvey of 45 teens found that they spent an average of 25.6 hours per week in front of a screen (television, computer, tablet, phone, based on the survey’s sample mean, which value could be the population mean? 2.3 hours 27.4 hours 75.3 hours 41.5 hours