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4 years ago

How do you find a slope of a line using only two points??

2 answers:

8 0

Its the difference between the y- values divided by the distance between the corresponding x values. Or its sometimes called rise / run.

ehidna [41]4 years ago

4 0

The formula to use is :
$\frac{ y_{2}-y_{1} }{x_{2}-x_{1}}$
where the two coordinates are in the format (x1, y1) and (x2, y2)

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3 years ago

Identify the vertex of y = x^2 + 4x + 5

docker41 [41]

Answer:

D. (-2,1)

Step-by-step explanation:

we have

$y=x^2+4x+5$

This is the equation of a vertical parabola open upward The vertex represent a maximum

Convert the quadratic equation in vertex form

$y=a(x-h)^2+k$

where

(h,k) is the vertex

Complete the square

$y=(x^2+4x+2^2)+5-2^2$

$y=(x^2+4x+4)+5-4$

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Rewrite as perfect squares

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