Respuesta :

texaschic101
y = mx + b
slope(m) = 3
(-1,-7)...x = -1 and y = -7
now we sub and find b, the y int
-7 = 3(-1) + b
-7 = -3 + b
-7 + 3 = b
-4 = b <== ur y intercept

so ur equation is : y = 3x - 4 and it has a y int of -4

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