If a line joining two points goes up and to the right, the slope is

If a line joining two points goes up and to the right, the slope is

• A. Positive
• B. Negative
• C. Zero
• D. Undefined

Answer: (A)

Slope measures how steep a line is by comparing the vertical change to the horizontal change as you move along the line. If the line goes up as you move to the right, the vertical change is positive and the horizontal change is positive, so their ratio is a positive number. Hence the slope is positive. A line that rises as you move to the left would have a negative slope, a horizontal line has zero slope, and a vertical line has undefined slope. So, when the line goes up and to the right, the slope is positive.

Slope measures how steep a line is by comparing the vertical change to the horizontal change as you move along the line. If the line goes up as you move to the right, the vertical change is positive and the horizontal change is positive, so their ratio is a positive number. Hence the slope is positive. A line that rises as you move to the left would have a negative slope, a horizontal line has zero slope, and a vertical line has undefined slope. So, when the line goes up and to the right, the slope is positive.