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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

Answer :

nobillionaireNobley
6.) y - (-3) = (1 - (-3))/(3 - 1) (x - 1)
y + 3 = (1 + 3)/2 (x - 1)
y + 3 = 4/2 (x - 1)
y + 3 = 2(x - 1) = 2x - 2
y = 2x - 2 - 3 = 2x - 5
y = 2x - 5

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