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  1. What is an equation for the line with slope and y-intercept 9?  (1 point)

y = x

y = 9x

y = x + 9

y = 9x + 



  1. What is an equation in slope-intercept form for the line that passes through the points (1, –3) and (3, 1)?  (1 point)

y = 3x + 1

y = x – 3

y = 2x + 5

y = 2x – 5

Verified Answer :

texaschic101
  1. In y = mx + b form, the slope is in the m position and the y int is in the b position. So if the slope and the y int re both 9, ur equation is :
    y = 9x + 9.

    6. (1,-3)(3,1)
        slope = (1 - (-3) / (3 - 1) = (1 + 3) / 2 = 4/2 = 2

    y = mx + b
    slope(m) = 2
    use either of ur points (3,1)...x = 3 and y = 1
    now we sub and find b, the y int
    1 = 2(3) + b
    1 = 6 + b
    1 - 6 = b
    -5 = b

    so ur equation is : y = 2x - 5

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