1. Write the equation in y=mx+b.
2. b is the y-intercept.
Ex.
1. y=9x+0
2. b=0. The y-intercept of y=9x is 0.
Hint:
Since this is a direct variation problem (y=kx), the x-intercept is also 0.
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9x + 3y = -54 3y = -9x - 54 y = -(3x + 18) Therefore, the y-intercept of this equation is y=-18.
standard form equation is y = mx + b where m =slope and b = y intercept -9x + y = 21 add 9x to both sides y = 9x +21 b = y intercept = 21
9x+3y = 6 3y = -9x+6 y = -3x+2 which is now in slope-intercept form
The equation you gave (-9x - 36 = 6x) does not have y included anywhere. Assuming you meant that -9x - 36 = 6x + y: Step 1: Give y its own side: -9x - 36 -6x = 6x - 6x + y -15x -36 = y Step 2: Set x as 0 -15(0) - 36 = y y = -36 The y-intercept is -36
If you mean y = -9x+11 then it is a straight line equation whereas -9 is the slope and 11 is the y intercept