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Crazy boy [7]
3 years ago
10

Find the equation of the linear relationship.

World Languages
1 answer:
Ket [755]3 years ago
8 0

Answer:

y = -3x +190

Explanation:

See attachment.

From the attachment, we have the following parameters.

(x_1,y_1) = (40,70)

(x_2,y_2) = (30,100)

First, the slope of the dots must be calculated.

m = \frac{y_1 - y_2}{x_1 - x_2}

This gives:

m = \frac{70-100}{40-30}

m = \frac{-30}{10}

m = -3

Next, we calculate the linear equation using:

y - y_1 = m(x - x_1)

Where

m = -3

(x_1,y_1) = (40,70)

This gives:

y - 70 = -3(x - 40)

y - 70 = -3x +120

Make y the subject of the formula

y = -3x +120+70

y = -3x +190

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