Convert 45.5 miles per hour to centimeters per minute
1 answer:
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Answer:
3
Step-by-step explanation:
To find the slope of a line going through two points, (x₁, y₁) and (x₂, y₂), we can use the following formula: . Note that it doesn't really matter which points we call (x₁, y₁) or (x₂, y₂).
Let's call (x₂, y₂) = (0, 5) and (x₁, y₁) = (-2, -1). Now, we can plug in the values for x, y₁, x₂, and y₂ into the formula.
We have:
Therefore, the slope of the line is 3. Hope this helps!
Factor a difference of squares:
This reduces to
due to the Pythagorean identity. By the same identity, you have
and you're done.
This reduces to
due to the Pythagorean identity. By the same identity, you have
and you're done.