Question

fill in the blank question
a
line on a distance - time graph indicates constant speed because it shows the same change in
each second.
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Explanation:

In a distance - time graph, the slope of the line represents speed. A straight (or linear) line has a constant slope, which means that the change in distance per unit time (like each second) is the same. So, a straight (linear) line indicates constant speed as it shows the same change in distance each second.

Answer:

First blank: straight (or linear)
Second blank: distance