SOLUTION: solve for y 3x-y=-x+8 identify the slope, x and y intercepts and graph
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Question 639329
:
solve for y
3x-y=-x+8
identify the slope, x and y intercepts and graph
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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. 8/4 = 2.
Y intercept is found by setting x to 0: the equation becomes by=c, and therefore y = c/b. Y intercept is 8/-1 = -8.
Slope is -4/-1 = 4.
Equation in slope-intercept form: y=4*x+-8.