Question

Convection ovens cook food more evenly than a standard thermal oven. Which statement explains how a convection oven works?(1 point)
Responses

Hot air is transferred through direct molecule contact.

Hot air is transferred when heat radiates from a thermal burner.
Hot air is transferred when heat radiates from a thermal burner.

Hot air is transferred through density differences when hot air rises and cool air sinks.
Hot air is transferred through density differences when hot air rises and cool air sinks.

Hot air is transferred through density differences when cool air rises and hot air sinks.

Answer 1

People use oven mitts to avoid getting burns when moving hot metal pans while cooking. Which physical property of the metal pan requires the use of an oven mitt when it is hot?(1 point)
Responses

High thermal conductivity
High thermal conductivity

Low thermal conductivity
Low thermal conductivity

Low magnetism
Low magnetism

High solubility
High solubility

Answer 2

If your rate of change is negative, what does that mean in context with the relationship between the x and y variables?


How is that different when the slope is positive?

Answer 3

Identify the slope and the y-intercept of the equation: y y = -2x + 6


Slope (m) =
Y-intercept (b)=

Answer 4

Identify the slope and the y-intercept if the line passes through (2, 11) and (6, 3)


Slope (m) =
y-intercept (b) =

Answer 5

The correct statement that explains how a convection oven works is:

**Hot air is transferred through density differences when hot air rises and cool air sinks.**

This process creates a circulation of hot air throughout the oven, which allows food to cook more evenly.

Answer 6

The physical property of the metal pan that requires the use of an oven mitt when it is hot is:

**High thermal conductivity.**

High thermal conductivity means that the metal pan transfers heat quickly, making it very hot to the touch, hence the need for oven mitts to prevent burns.

Answer 7

When the rate of change is negative between two variables (often represented as a slope in a graph), it indicates that as the \( x \) variable increases, the \( y \) variable decreases. This can mean that there is an inverse relationship between the two variables: higher values of \( x \) correspond to lower values of \( y \). In practical terms, if you were to visualize this on a graph, the line would slope downwards from left to right.

In contrast, when the slope is positive, it signifies that as the \( x \) variable increases, the \( y \) variable also increases. This indicates a direct relationship between the two variables: higher values of \( x \) correspond to higher values of \( y \). On a graph, this would show a line sloping upwards from left to right.

To summarize:
- **Negative Rate of Change**: \( x \) increases → \( y \) decreases (downward slope).
- **Positive Rate of Change**: \( x \) increases → \( y \) increases (upward slope).

Answer 8

In the equation \( y = -2x + 6 \):

- The **slope (m)** is the coefficient of \( x \), which is **-2**.
- The **y-intercept (b)** is the constant term, which is **6**.

So you can write:

- Slope (m) = -2
- Y-intercept (b) = 6

Answer 9

To find the slope (m) and y-intercept (b) of the line that passes through the points (2, 11) and (6, 3), we can follow these steps:

### Step 1: Calculate the Slope (m)

The formula for the slope (m) between two points \((x_1, y_1)\) and \((x_2, y_2)\) is:

\[
m = \frac{y_2 - y_1}{x_2 - x_1}
\]

Using the points (2, 11) and (6, 3):

- \(x_1 = 2\), \(y_1 = 11\)
- \(x_2 = 6\), \(y_2 = 3\)

Plugging the values into the formula:

\[
m = \frac{3 - 11}{6 - 2} = \frac{-8}{4} = -2
\]

### Step 2: Find the Y-Intercept (b)

To find the y-intercept (b), we can use the slope-intercept form of the equation of a line, which is:

\[
y = mx + b
\]

We can choose one of the points and the slope to solve for \(b\). Let's use the point (2, 11):

\[
11 = -2(2) + b
\]

This simplifies to:

\[
11 = -4 + b
\]
\[
b = 11 + 4 = 15
\]

### Summary

So, we have:

- Slope (m) = -2
- Y-intercept (b) = 15