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paaoolav
26.10.2019 •
Mathematics
Which of the following equations would not have one solution
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Ответ:
Let's go through all examples.
a. x² + 8x + 16 = 0
x² + 2 * 4 * x + 4² = 0
(x + 4)² = 0
x + 4 = 0
x = -4 one solution
b. x² + 7x + 49/4 = 0
x² + 2 * 7/2 * x + (7/2)² = 0
(x + 7/2)² = 0
x + 7/2 = 0
x = -7/2 one solution
c. x² + 10x + 25 = 0
x² + 2 * 5 * x + 5² = 0
(x + 5)² = 0
x + 5 = 0
x = -5 one solution
This leaves choice d as the equation with more than one solution.
Ответ:
Step-by-step explanation:
The given equation is
This linear equation has the form:
, where
is the slope and
is the y-intercept.
So, in this case, we have a slope of 2/5 and y-intercept at (0,-4).
Additionally, the slope represents the inclination of the line, graphically, but also represents the constant ratio of change between variables.
Therefore, the answer is 2/5.