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vredina [299]
2 years ago
10

What is the equation of the line on the graph? Write your answer in slope-intercept form. (y = mx + b)

Mathematics
1 answer:
Nikolay [14]2 years ago
5 0

Answer:

y= ⅔x -2

Step-by-step explanation:

<u>slope-intercept </u><u>form</u>

y= mx +b, where m is the slope and b is the y-intercept.

Two given coordinates: (-3, -4) and (6, 2)

\boxed{slope =  \frac{y1 - y2}{x1 - x2} }

Slope

=  \frac{2 - ( - 4)}{6 - ( - 3)}

=  \frac{2 + 4}{6 + 3}

=  \frac{6}{9}

=  \frac{2}{3}

Substitute m= ⅔ into the equation:

y= ⅔x +b

From the graph, the y- intercept is -2 since the line cuts through the x-axis at (0, -2).

Alternatively, we can also substitute a pair of coordinates into the equation to find the value of b.

When x= 6, y= 2,

2 =  \frac{2}{3} (6) + b

2= 4 +b

b= 2 -4

b= -2

Thus the equation of the line is y= ⅔x -2.

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