anonymous
  • anonymous
What is an equation for the line that passes through points (–1, –4) and (1, 4)? Write the equation in slope-intercept form. PLEASE SHOW STEP BY STEP
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
First find the slope using the 2 point can you do that?
anonymous
  • anonymous
yes
anonymous
  • anonymous
What did you get?

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anonymous
  • anonymous
zero slope or unidentified slop
anonymous
  • anonymous
\[slope = \frac{ 4-(-4) }{ 1-(-1) }\]
anonymous
  • anonymous
that's all
anonymous
  • anonymous
Nope you then need to use this slope and one of the points to find the equation. plug in this formula y-y1=m(x-x1) (x1,y1) is taken from one of the points
anonymous
  • anonymous
ok then what
anonymous
  • anonymous
i dont get my head is about to explode they gave me this question out of no where
anonymous
  • anonymous
can u show me step by step
anonymous
  • anonymous
So what do you have so far? m (slope)=4, choose the point (1,4), x1=1, y1=4 you should have y-4=4(x-1)
anonymous
  • anonymous
can you please just put all the steps on one reply like: 1. 2. 3. 4.
anonymous
  • anonymous
Step 1: Find the slope(m) = (4-(-4))/(1-(-1)) = 8/2=4
anonymous
  • anonymous
ok step 2
anonymous
  • anonymous
Step 2: Use point slope form to get equation: y-y1=m(x-x1), m=4, point (1,4) where x1=1, y1=4 In the point-slope equation: y-1=4(x-4) Do u understand these step so far?
anonymous
  • anonymous
yes
anonymous
  • anonymous
Step 3: Slope-intercept form is y=mx+b So we have y-1=4(x-4) Solve for y (that is put y by itself on one side).
anonymous
  • anonymous
If you did that correctly you should get: y=4x-15
anonymous
  • anonymous
ohhh thanks man
anonymous
  • anonymous
ill give u a medal
anonymous
  • anonymous
Sure no problem.

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