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lorasvet [3.4K]
3 years ago
5

Plz help me idk what t0o do

Mathematics
1 answer:
77julia77 [94]3 years ago
5 0

Answer:

y = - \frac{1}{2} x + 2

Step-by-step explanation:

According to the chart for the values of x (input) the corresponding values of y (output) are given.

The slope of the equation is constant and given by m = - \frac{1}{2}.

If we want to check the slope to be constant then we can use the table and the values of x and y.

The first point (x_{1},y_{1}) ≡ (-2,3)

The second point (x_{2},y_{2}) ≡ (8,-2)

The third point (x_{3},y_{3}) ≡ (10,-3)

The fourth point (x_{4},y_{4}) ≡ (20,-8)

Now, we can check that slope of the straight line is constant for all those values.

\frac{y_{2} - y_{1}}{x_{2} - x_{1}} = \frac{- 2 - 3}{8 - (- 2)} = - \frac{1}{2}

\frac{y_{3} - y_{2}}{x_{3} - x_{2}} = \frac{- 3 - (- 2)}{10 - 8} = - \frac{1}{2}

\frac{y_{4} - y_{3}}{x_{4} - x_{3}} = \frac{- 8 - (- 3)}{20 - 10} = - \frac{1}{2}

Now, Let us assume that the equation of the straight line is y = - \frac{1}{2} x + c ....... (1)

Now, we have to find the value of c.

This straight line passes through (x_{1},y_{1}) ≡ (-2,3) point.

So, the value of c can be calculated from the equation (1) as, c = 3 - 1 = 2

Therefore, y = - \frac{1}{2} x + 2 is the required equation. (Answer)

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