Which description best describes the graph?
2 answers:
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If a quadratic function has zero at x=-9, then point (-9,0) lies on the graph of quadratic function.
A line of symmetry has equation x=-3.5 that is x+3.5=0.
Use formula for the distance from point to the line AX+By+C=0:
Thus,
Answer: the distance is 5.5 units.
Answer:
Today's temperature is 5.7 degrees above Bill's normal temperature.
Step-by-step explanation:
Given
Represent the normal temperature with N and today's temperature with T.
Such that:
Required
Determine the temperature above the normal temperature
The interpretation of this is to calculate the difference between Bill's normal temperature and Bill's today temperature.
Represent the difference with D
D is calculated as follows:
Substitute values for T and N
Hence, today's temperature is 5.7 degrees above Bill's normal temperature.
Answer:
C.
Step-by-step explanation:
In order to find the slope knowing two points, use the slope formula .
and
represent the x and y values of one point the line intersects, and
and
represent the x and y values of another point the line intersects.
Knowing this, use the points (-4, -4) and (6, 4) for the formula. Substitute -4 for , -4 for
, 6 for
, and 4 for
. Then, simplify:
Thus, is the slope of the line.