SOLUTION: can you please help me with this equation.. what is the slope and y-intercept for the line:-10x-5y+20=0
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Question 8326
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can you please help me with this equation..
what is the slope and y-intercept for the line:-10x-5y+20=0
Found 2 solutions by
ichudov, CrazyMan Jr.
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Answer by
ichudov(507)
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DESCRIBE a linear EQUATION: slope, intercepts, etc
Equation
describes a sloping line. For any
equation ax+by+c = 0, slope is
.
X intercept is found by setting y to 0: ax+by=c becomes ax=c. that means that x = c/a. -20/-10 = 2.
Y intercept is found by setting x to 0: the equation becomes by=c, and therefore y = c/b. Y intercept is -20/-5 = 4.
Slope is --10/-5 = -2.
Equation in slope-intercept form: y=-2*x+4.
Answer by
CrazyMan Jr.(21)
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-10x-5y+20=0
Re-arrange the equation.
-5y = 10x-20
-5y/-5 = (10x/-5)-(20/-5)
y = -2x+4
J-Man