Is the point on the line ?

Mathematics

1 answer:

Oxana [17]2 years ago

3 0

Answer:

i think the answer is no i used tge desmo graphing calculator and tht point wasnt on it

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Write the expression that appears under the radical symbol in the quadratic formula. what is the quality called? what can it be

ira [324]

This expression is called the Discriminant, also shown as Δ.
It is equal to b² - 4ac. This is a very important part of the quadratic formula as it determines whether x will have two values, one repeated value or no real values. Here are a few examples.

a) x² - 2x - 1. a is equal to 1 since 1x² = x². b = -2, c = -1
The discriminant will be (-2)² - 4×1×-1 = 4 + 4 = 8.
Since Δ > 0, there are two x values. Graphed, the parabola sinks below the x axis.

b) x². a = 1, b = 0 (0x = 0), c = 0
The discriminant will be 0² - 4×1×0 = 0 - 0 = 0.
Since Δ = 0, there is only one x value. Graphed, the parabola touches the x axis at only one point.

c) x² + 1. a = 1, c = 1.
The discriminant will be 0² - 4×1×1 = 0 - 4 = -4
Since Δ < 0, there are no real x values. Graphed, the parabola floats above the x axis.

Hope this helps!

8 0

2 years ago

M% of n? Meaning that you won't get an actual number. For example, m/100*n.

allochka39001 [22]

Answer:

$\frac{m \times n}{100}$