A few days ago

mj D

Can someone help me check my answers to Linear Equations?

Thanks for your help, here is my answer, I am not good with Equations and I need help, appreciate it

Q2.Compute the slopes of the line

L1 (2,3);(1,0) = answer – m=3

L2 (1,2);(3,4) – answer m=1

L3 (-2,3); (2,1) – answer m = -1/2

Find an equation of the line

Q1 slope = 3 ; containing the point (-3,4)

answer y=3x +13

Q2 slope = -3 ; y-intercept = (0,-2)

answer y=-3x -2

Q3 slope = -4 ; x-intercept = (2,0)

answer y= -4x +6

Q4 containing the points (-3,4) and (2,5)

answer y-y1 = m(x-x1)

5-4 = m(2-(-3))

1 = m(2+3)

1=m(5)

m=1/5

Please teach if I made a mistake, I just want to be correct.

Appreciate everyone’s help.

Top 2 Answers

A few days ago

Paladin

Favorite Answer

L1,L2,L3,Q1,Q2 all look ok

Q3 should start with y-0=-4(x-2)

y=-4x+8

Q4 has the slope right, but you didn’t go back to the formula to find the equation: y-4=(1/5)(x-(-3)) and solve for whatever form your teacher wants.

A few days ago

cmh0114

For most of the questions, you had the right answer, but you just made simple mistakes like everyone does from time to time.

Q1.) m=3, point =(-3,4). (y-4)=3(x-3) => y-4=3x-9 => y=3x-9+4 => y=3x-5

The only thing you did wrong is that you added positive 9 and 4, instead of adding negative 9 and 4.

Q3.) m=-4; point = (2,0). (y- 0)= -4(x-2) => y= -4(x) + -4(-2) => y=-4x+8

I think you multiplied the negatives (of -4 and -2), then added the numbers, so you got +6 instead of -8.

Hope that helps.

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