5. what is an equation for the line with slope and y-intercept 9? (1 point)
y = x
y = 9x
y = x + 9
y = 9x + 

6. 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

5. 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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