floresf1
  • floresf1
Which function passes through the points (2, 15) and (3, 26)? y = 11x + 7 y = 11x − 7 y = 7x + 11 y = -11x − 7 y = 7x − 11
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
use this formula\[y=mx+b\]where\[y=vertical~axis\]\[x=horizontal~axis\]\[m=slope\]\[b=y-intercept\] First find the slope using the given points Formula for slope is\[m=\frac{ y_2-y_1 }{ x_2-x_1 }\]
floresf1
  • floresf1
ill try
anonymous
  • anonymous
\[Let~say(2,15)=(x_1,y_1)\]\[Let~say(3,26)=(x_2,y_2)\]substitute this value into the slope formula

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anonymous
  • anonymous
\[m=\frac{ y_2-y_1 }{ x_2-x_1 }\]
anonymous
  • anonymous
\[m=\frac{ 26-15 }{ 3-2 }\]
anonymous
  • anonymous
\[m=11\]
anonymous
  • anonymous
Now we have the value for x,y and m but we don't have b(y-intercept)
anonymous
  • anonymous
I randomly choose \[(2,15)~as~(x,y)\]
anonymous
  • anonymous
m=11
anonymous
  • anonymous
Now substitute the value into this formula\[y=mx+b\]
floresf1
  • floresf1
what does x equal
anonymous
  • anonymous
\[15=11(2)+b\]\[15=22+b\]
floresf1
  • floresf1
what does b equal to
anonymous
  • anonymous
i randomly choose (2,15) to represent as(x,y)
anonymous
  • anonymous
b=y-intercept
floresf1
  • floresf1
so its what
anonymous
  • anonymous
u have the value for x,y and m... Now substitute the value into\[y=mx+b\]to find the value of b
anonymous
  • anonymous
The value for x is 2,y is 15 and m=11
anonymous
  • anonymous
No we hv to find the value of b(y-intercept) to form the equation
anonymous
  • anonymous
Now*
anonymous
  • anonymous
\[15=2(11)+b\]\[15=22+b\]Subtract 22 on both sides
anonymous
  • anonymous
\[15-22=22-22+b\]
anonymous
  • anonymous
\[b=15-22\]\[b=?\]solve it @floresf1

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