Between July 28 and 30 of last year over 21.2cm(about 8 inches) of rain fell in a city. The normal total monthly rainfall in this city in July is 6.48cm and in August is 3.55cm. How much more rain fell those three days than normally falls in July and August combined?

step-by-step explanation:

let

we know that

the y-intercept is the y-coordinate of the point when the value of x is equal to zero

so

the y-coordinate of the point a is the y-intercept

the answer part a) is

the value of y-intercept is

part b) find the slope m

we know that

the value of the slope is equal to

substitute the values

therefore

the answer part b) is

the value of the slope is equal to

the general answer is

the slope is

the value of y-intercept is

idkidkdidkdkdidkx

step-by-step explanation:

nndncnd cnn

snddnd

substitute,

circle 1 = 5

circle 2 = 20

circle 3 = 44

in this case no matter how you add, you will always get a perfect square..

hence proved

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