Get in form.
2X - 5Y = 15
- 5Y = - 2X + 15
Y = (2/5)X - 3
-------------------------
Y intercept = - 3
===============zero out Y to find X intercept
(2/5)X - 3 = 0
(2/5)X = 3
X = 15/2
------------
X intercept = 15/2
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The equations are equivalent.
The equation for the given points is y = x+4 in slope intercept form
Points: (-1, 2) and (5, 2) Slope: 0 Equation: y = 2
Points: (4, 5) and (-3, -1) Slope: 6/7 Equation: 7y = 6x+11
Points: (9, 1) and (4, 16) Slope: -3 Equation: y = -3x+28