Question

A line passes through the points (7, 10) and (7, 20). Which statement is true about the line? It has a slope of zero because in the formula is zero, and the numerator of a fraction cannot be zero. It has a slope of zero because in the formula is zero, and the denominator of a fraction cannot be zero. It has no slope because in the formula is zero, and the numerator of a fraction cannot be zero. It has no slope because in the formula is zero, and the denominator of a fraction cannot be zero.

Answer 1

Slope formula: $\frac{y2-y1}{x2-x1}$
Apply. 
$\frac{20-10}{7-7} = \frac{10}{0} =$ undefined (No slope) 

Thus, that answer is: Choice D. 

If you're wondering why C isn't this answer, it's because  it doesn't matter if 0 is the numerator of a fraction. If it was, then the slope would be 0 regardless. However, if 0 takes place in the denominator, the slope will be undefined; there will be no slope. 

Answer 2

Answer:

The answer is d.

Step-by-step explanation:

I just took the quiz ;)