The equation for oven B is y = 38x + 72, with a higher rate of change than oven A (y = 25x + 72). After 8 minutes, oven B is 104 degrees Fahrenheit hotter.
To find the equation of the line for oven B using the points (1, 110) and (3, 186):
Slope (m):
Using the slope formula (m = (y2 - y1) / (x2 - x1)), where (x1, y1) = (1, 110) and (x2, y2) = (3, 186):
Slope (m) = (186 - 110) / (3 - 1) = 76 / 2 = 38.
Y-intercept (b):
Using the point-slope form (y - y1 = m(x - x1)) with the point (1, 110):
y - 110 = 38(x - 1)
Solving for y, we get y = 38x + 72.
So, the equation of the line for oven B is y = 38x + 72.
Now, comparing the functions for ovens A and B:
Initial values:
Oven A: y = 25x + 72 (initial value = 72)
Oven B: y = 38x + 72 (initial value = 72)
Both ovens have the same initial value of 72.
Rates of change:
Oven A: Slope = 25
Oven B: Slope = 38
The rate of change is higher for oven B (38) than for oven A (25).
To find the temperature difference after 8 minutes:
Oven A at x = 8:
y = 25(8) + 72 = 272
Oven B at x = 8:
y = 38(8) + 72 = 376
The difference is 376 - 272 = 104 degrees Fahrenheit.
Therefore, the temperature in oven B will be 104 degrees Fahrenheit greater than in oven A after 8 minutes.