sadikllarierika
Answered

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Can someone PLEASE explain to me how to find the rule of a function table. I understand how find the rule of easy function tables but not this one and a few more. WILL GIVE BRAINLIST!!!!!!!!!!!!!!!!!!!!! PLEASE HELP HELP

Can Someone PLEASE Explain To Me How To Find The Rule Of A Function Table I Understand How Find The Rule Of Easy Function Tables But Not This One And A Few More class=

Sagot :

Answer:

y=2x-46

Step-by-step explanation:

Select any two coordinate points. I'm picking (1,-44) and (2, -42).

x1 and y1 are the first coordinates. x2 and y2 are the second coordinates. The formula for finding the slope of a linear fuction is (y2-y1)/(x2-x1). Substiute the numbers into this formula:

-42-(-44)/2-1

=-42+44/1

=2

This is the slope. In y=mx+b, plug in your newly found slope. Next, to find the y-intercept, plug any pair of coordinate points into your incomplete formula y=2x+b. I'm going to use (1,-44) again.

-44=2(1)+b

-44=2+b

b=-46

Now, plug this into your formula, and you'll get y=2x-46.

debranickerson91
We use the general equation y = ax + b.
Then by using 2 values of given x and y we calculate a and b by solving linear equations.

Suppose given
y x
2 1
4 3

Then 2=a+ b
4= 3a+ b
Solving a = 1 and b= 1

Thus y=x+ 1
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