# Positive & Negative Slope Question

Question 1
The following coordinate plane has 5 lines. Each line has its slope labeled 'zero', 'negative', 'positive' or 'infinite'.

How many lines are labeled correctly?

A. 1
B. 2
C. 3
D. 4

# Step by Step Solution

Step 1
Looking at the reference picture below, the line on the right has a positive slope.

Therefore, the slope for this line is correctly labeled.

Step 2
Looking at the reference picture below, the line on the right has a negative slope.

Therefore, the slope for this line is correctly labeled.

Step 3
Next, looking at the reference picture below, the line on the right has zero slope.

Therefore, the slope for this line is should be zero and not infinite.

Step 4
Looking at the reference picture below, the line on the right has infinite slope.

Therefore, the slope for this line is should be infinite and not zero.

Step 5
Finally, looking at the reference picture below, the line on the right has negative slope.

Therefore, the slope for this line is should be negative and not positive.

Step 6
Of all the 5 lines, only 2 are correctly labeled. Hence, the answer is B.
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