State if there appears to be a positive correlation, negative correlation, or no correlation. When there is a correlation, identify the relationship as linear, quadratic,
or exponential. Also find the slope-intercept form of the equation of the line that best
fits the data.
X Y
1,900 410
2,400 150
2,600 790
3,100 260
4,900 270
X Y
6,000 930
6,200 $30
6,400 570
6,900 60
6,900 190
Negative correlation Quadratic
O Negative Correlation Linear
Positive correlation Linear
No Correlation

Titus works at a hotel. part of his job is to keep the complimentary pitcher of water at least half full and always with ice. when he starts his shift, the water level shows 4 gallons, or 128 cups of water. as the shift progresses, he records the level of the water every 10 minutes. after 2 hours, he uses a regression calculator to compute an equation for the decrease in water. his equation is w –0.414t + 129.549, where t is the number of minutes and w is the level of water. according to the equation, after about how many minutes would the water level be less than or equal to 64 cups?