Ruby is buying chocolates for her friends. The candy store charges $13.80 for a box of chocolates, and each additional piece of
2 answers:
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Answer:
Step-by-step explanation:
The formula of a slope:
If
m > 0, then a line is rising
m < 0, then a line is falling
m = 0, then a line is horizontal
m is undefined, then a line is vertical
<h2>a.</h2>(2, 1) and (4, 5)
(-1, 0) and (3, -5)
(2, 1) and (-3, 1)
(-1, 2) and (-1, -5)