3 years ago

What is the y intercept of a graph containing the two points (3,1) and (7,-2)?

Mathematics

1 answer:

svetlana [45]3 years ago

6 0

Answer:

3.25

Step-by-step explanation:

The slope of the line is ∆y/∆x = (-2-1)/(7-3) = -3/4.

The point-slope form of the line with slope m through (h, k) is ...

y -k = m(x -h) . . . . . . . . . . we have m=-3/4, (h, k) = (3, 1)

y -1 = -3/4(x -3)

The y-intercept is the point on the line where x=0. For x=0, the value of y is ...

y = -3/4(-3) +1 = 9/4 +4/4

y = 13/4 = 3 1/4

The y-intercept is 3 1/4.

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dexar [7]

Answer: Blood type will be A when event "A" happened and event "B" did not happen. Blood type will be B when event "A" did not happened and event "B" happened. Blood type will be AB when both events happened and blood type will be O when both events did not happen.

Step-by-step explanation:

S={AntiA reacts; AntiA does not react; AntiB reacts; AntiB does not react}

If AntiA reacts and AntiB reacts = AB (A∩B)

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If AntiA reacts and AntiB does not react= A (A∩B')

If AntiA does not react and AntiB reacts= B (A'∩B)