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School is approximately halfway between the Library and the Grocery Store. On a coordinate grid, the Library is location at (4, 12) and
the Grocery Store is at (-7, 2). What is the location of the school on the coordinate grid?
(-5.5,5)
(-1.5,7)
(8,-2.5)
(4.-4.5)

Sagot :

Rspill6idn

Answer:

(-1.5,7)

Step-by-step explanation:

We can find the answer in one of three ways:

1.  Graph

Graph attached.  Find the slope and intercept of the line connecting the grocery and library and graph it.   The add a line for x = -1.5, since that is midway between 4 and -7 on the x axis.  The intersection is the midway point.

2.  Mathematical

Find the equation for a line connecting the library and grocery:

y = (11/10)x + 8.4

The midway point for x is -1.5

y = (11/10)(-1.5) + 8.4

y = -1.4 + 8.4

y = 7

3.  Logic

The midway point on the x axis is calculated by (4-7)/2 or -3/2.  The answer options only have one that has a -1.5 x coordinate: (-1.5,7)

View image Rspill6
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