HyperSniper445
  • HyperSniper445
Please help with Equations from Graphs? I will fan and medal
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
HyperSniper445
  • HyperSniper445
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UnkleRhaukus
  • UnkleRhaukus
what is the y-intercept?
HyperSniper445
  • HyperSniper445
i dont know

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HyperSniper445
  • HyperSniper445
how to find it
UnkleRhaukus
  • UnkleRhaukus
what value on the y-axis is it when the line crosses ?
UnkleRhaukus
  • UnkleRhaukus
|dw:1449977772039:dw|
HyperSniper445
  • HyperSniper445
y intercept is -2?
UnkleRhaukus
  • UnkleRhaukus
yes
UnkleRhaukus
  • UnkleRhaukus
what is the slope (gradient) of the line?; how many units up does the line go, when it goes across 1 unit?
HyperSniper445
  • HyperSniper445
0
UnkleRhaukus
  • UnkleRhaukus
yes!
UnkleRhaukus
  • UnkleRhaukus
The equation for a line function is y = mx+b you have found b=-2, and m=0
HyperSniper445
  • HyperSniper445
0x + -2
UnkleRhaukus
  • UnkleRhaukus
yes, now simplify...
HyperSniper445
  • HyperSniper445
simplify? sry im not good at math...
UnkleRhaukus
  • UnkleRhaukus
0x = 0, right?
HyperSniper445
  • HyperSniper445
what happened to the -2?
UnkleRhaukus
  • UnkleRhaukus
the -2 is all we have left y = 0x - 2 y = 0 - 2 y = -2
HyperSniper445
  • HyperSniper445
oh okay so d
UnkleRhaukus
  • UnkleRhaukus
Yes.
HyperSniper445
  • HyperSniper445
cool. could you help with a few more? :)
UnkleRhaukus
  • UnkleRhaukus
ok
HyperSniper445
  • HyperSniper445
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UnkleRhaukus
  • UnkleRhaukus
again we have y = mx + b where b is the y-intercept and m is the slope what is b and m in this case?
HyperSniper445
  • HyperSniper445
m= -3 b= -1
UnkleRhaukus
  • UnkleRhaukus
correct!, so what is the equation of the line?
HyperSniper445
  • HyperSniper445
is it d?
UnkleRhaukus
  • UnkleRhaukus
\[\checkmark\]
HyperSniper445
  • HyperSniper445
just a few more if you could :)
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UnkleRhaukus
  • UnkleRhaukus
the slope m is equal to the rise divided run between two points: (x_1, y_1) & (x_2, y_2) m = ( y_2 - y_1 ) / ( x_2 - x_1 )
HyperSniper445
  • HyperSniper445
okay
UnkleRhaukus
  • UnkleRhaukus
can you find the slope between (4, 5) & (-3, -1)?
HyperSniper445
  • HyperSniper445
6/7?
UnkleRhaukus
  • UnkleRhaukus
yes!
HyperSniper445
  • HyperSniper445
what now?
UnkleRhaukus
  • UnkleRhaukus
which two options could be correct?
HyperSniper445
  • HyperSniper445
oh i see lol b and c
UnkleRhaukus
  • UnkleRhaukus
yeah, but lets check that they are equivalent, can you rearrange B. y-5 = (6/7)(x-4) into y= mx+b form?
UnkleRhaukus
  • UnkleRhaukus
we are hoping that the y-intercept will be the same for both B. & C.
HyperSniper445
  • HyperSniper445
im not sure
UnkleRhaukus
  • UnkleRhaukus
y-5 = (6/7)(x-4) y = (6/7)(x-4) + 5 = (6/7)x - 4*(6/7) + 5 = (6/7)x - 4*(6/7) + 5*(7/7) = (6/7)x + (-4*6 + 5*7) / 7 =
HyperSniper445
  • HyperSniper445
i have to go, thx for the help lol :)

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