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4 years ago

What is the value of y for the line that has a slope of 1 and goes through the points (-4, y) and (-2, 8)?

Mathematics

1 answer:

Pavel [41]4 years ago

6 0

Answer:

y = 6

Step-by-step explanation:

To write the equation of a line, calculate the slope between points (-4,y) and (-2,8). Substitute m = 1 and solve for y.

$m = \frac{y_2-y_1}{x_2-x_1}\\\\ 1 = \frac{y-8}{-4--2}\\\\ 1 =\frac{y-8}{-2}\\\\-2=y-8\\\\6=y$

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3 years ago

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antoniya [11.8K]

Answer:

The perimeter of the polygon is $P=14.47\ units$

Step-by-step explanation:

we know that

The perimeter is the sum of the length sides of the polygon

In this problem

P=XY+YZ+XZ

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step 1

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substitute

$d=\sqrt{(0-3)^{2}+(3+1)^{2}}$

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Find the distance YZ

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substitute

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step 3

Find the distance XZ

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X(−1, 3), Z(−1,−2)

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step 4

Find the perimeter

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3 years ago