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qwelly [4]
3 years ago
14

Line MN passes through points M(4, 3) and N(7, 12). If the equation of the line is written in slope-intercept form, y = mx + b,

what is the value of b? 1. -15 2. -9 3. 3 4. 9
Mathematics
2 answers:
seropon [69]3 years ago
3 0

Answer:

-9

Step-by-step explanation:

What b represents here is the y intercept.

The first thing we will do here is to find the slope.

Mathematically;

m = (y2-y1)/(x2-x1)

Plugging the values;

m = (12-3)/(7-4) = 9/3 = 3

The equation can thus be written as;

y = 3x + b

To get b, we can use any of the points since they lie on the line

Let’s use point M

Substitute the values of x and y in the equation

3 = 3(4) + b

3 = 12 + b

b = 3-12 = -9

Arte-miy333 [17]3 years ago
3 0

Answer:

B) -9

Step-by-step explanation:

Please mark as brainlest!!

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Read 2 more answers
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