Question

marcie heated a beaker of water in science class. the scatter plot below shows the temperature (y), in degrees celsius (°c), of the water based on the number of minutes (x) she heated the water. which equation describes the line of best fit for the temperature of the water based on the number of minutes marcie heated the water? a. ( y = 5.3x + 12 ) b. ( y = 5.3x + 23 ) c. ( y = -5.3x + 23 ) d. ( y = -5.3x + 50 )

Explanation:

Step1: Check trend direction

The scatter plot shows increasing temperature with time, so slope is positive. Eliminate C and D.

Step2: Estimate y-intercept

At x=0 (0 minutes), temperature is ~23°C (visible on plot). So intercept ≈23.

Step3: Match with options

Option B has positive slope (5.3) and intercept 23.

Answer:

B. y = 5.3x + 23