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rudybelizaire
23.04.2020 •
Mathematics
Analyzing a Linear Function Expressed in Different Ways
A linear function is expressed by a graph of a line that
crosses both axes at the origin. An equation is written in
slope-intercept form to express the same function as
shown in the graph. From just this information, what
statements can be made?
Choose the true statements.
the slope of the equation must be positive.
The y-intercept of the equation is zero.
It is possible that the line on the graph is horizontal.
The slope of the equation must be negative.
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Ответ:
Let
Let
Pythagorean Theorem:
⇒
Substitute a new variable
⇒
⇒
⇒
⇒
⇒
⇒
Since 9 is a perfect square, we go with
⇒
Plug
⇒
⇒
⇒
Plug
⇒
⇒
⇒
So the triangle is a 3-4-5 right triangle.