SOLUTION: Find both the x-intercept and the y-intercept of the line given by the equation 8x -4y -9 = 0
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Question 206273
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Find both the x-intercept and the y-intercept of the line given by the equation
8x -4y -9 = 0
Answer by
Targetweek(62)
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First get x and y on the same side
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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. 9/8 = 1.125.
Y intercept is found by setting x to 0: the equation becomes by=c, and therefore y = c/b. Y intercept is 9/-4 = -2.25.
Slope is -8/-4 = 2.
Equation in slope-intercept form: y=2*x+-2.25.
Tht should solve your problem