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[image]
Does this line have a positive or negative slope? |
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Definition
| positive slope. The line rises from left to right. |
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Definition
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Definition
| Slope. Constant rate of change. |
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| y intercept. Start value. The y value for the (x,y) point of the line that intersects the y axis. |
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| What does y = -2 look like when graphed? |
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Definition
| A horizontal line.[image] |
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| What is the slope of the line y = -2? |
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Definition
| 0 because it is a horizontal line. |
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| What does x = 3 look like when graphed? |
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Definition
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| What is the slope of a vertical line? |
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Definition
[image]
No slope or undefined. |
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Term
[image]
Does this line have a positive or negative slope? |
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Definition
| Negative. The line falls from left to right. |
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Term
| How do you find slope of a line on a graph? |
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Definition
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| How do you find slope when you are given 2 coordinate points or a table? |
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Definition
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| How can you graph a linear equation? |
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Definition
| You can graph a linear equation by making a table, picking numbers for x then solve for y. OR you can graph using the b, y intercept and m slope. |
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| What do you know about the slope of parallel lines? |
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Definition
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| What do you know about the slope of perpendicular lines? |
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Definition
[image]
The slopes will be OPPOSITE RECIPROCALS. |
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| Two lines are parallel. If the slope of the first line is 3, what is the slope of the second line? |
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Definition
| 3 because parallel lines have the same slope. |
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| Two lines are perpendicular. If the slope of the first line is -5/4, what is the slope of the second line. |
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Definition
| 4/5. Opposite reciprocals. |
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| How do you know that two intersecting lines are perpendicular? |
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Definition
They form 90° angles.
[image] |
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| What does opposite reciprocal mean? |
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Definition
| to flip a fraction and change the sign. Example 2/3 becomes -3/2. |
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| How can you determine that a relationship on a graph is direct variation proportional? |
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Definition
| The line will go through the point (0,0) and the line will be straight due to the constant rate of change. |
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| How can you determine if an equation direct variation proportional? |
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Definition
| The equation will be in the from y = mx. Example y = 2x. |
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| How can you determine if a table has a direct variation proportional relationship? |
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Definition
[image]
The table will be linear meaning that is has a constant rate of change and one of the points will be (0,0) Careful! You may need to work backwards using the pattern to see the point (0,0) |
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