Chapter 8 - Section 8.2 - Graphing Linear Equations - Exercises - Page 303: 9

(0,-3) (4,0) (-4,-6)

Work Step by Step

$3x-4y=12$ If $x=0$ $3(0)-4y=12$ $-4y=12$ $-4y\div-4=12\div-4$ $y=-3$ If $y=0$ $3x-4(0)=12$ $3x-0=12$ $3x\div3=12\div3$ $x=4$ if $x=-4$ $3(-4)-4y=12$ $-12-4y=12$ $-12-4y+12=12+12$ $-4y=24$ $-4y\-4=24\div-4$ $y=-6$

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