Q: What is the y-intercept of the line y equals 3x -1?

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3x - 4y = 10-3x - 4y = 8 -> add line 1 to line 2 3x - 4y = 100x - 8y = 18 -> -8y = 18 -> y = -18/8 = -9/4 -> 3x - 4*(-9/4) = 10 -> 3x + 9 = 10 -> 3x = 1 -> x = 1/3

y = 1/3x+4

-1

- 1/3

It's the equation of a straight line with a slope of -3, that crosses the y-axis at y= -1 . Every point on the line is a solution to the equation. There are an infinite number of them.

Related questions

3x - 4y = 10-3x - 4y = 8 -> add line 1 to line 2 3x - 4y = 100x - 8y = 18 -> -8y = 18 -> y = -18/8 = -9/4 -> 3x - 4*(-9/4) = 10 -> 3x + 9 = 10 -> 3x = 1 -> x = 1/3

y = 1/3x+4

3/4

3/1

-3

3x+y = 4 y = -3x+4 Perpendicular slope: 1/3

-1

- 1/3

Equation of given line: 3x + y = 15 or y = -3x + 15 Slope of given line = coefficient of x = -3 Slope of perperndicular = -1/(slope of given line) = -1 / (-3) = 1/3

y = 1/3x+4/3

-4

y-6=3x-5 y=3x+1 (0,1)(1,4)(2,7)etc