Example+Answers+For+5.2+Using+Intercepts

Example Answers:
Example 1: Finding Intercepts: 3x-2y=12 Step 1:You find the x-intercpet and replace the y-intercept with 0 and solve for the x-intercept. 3x-2y=12 3x-2(0)=12 3x-0=12 3x=12 x=4 The x-intercept 3x-2y=12 Step 2:You find the y-intercept and replace the y-intercept with 0 and solve for the y-intercept. 3x-2y=12 3(0)-2y=12 0-2y=12 -2y=12 y=-6 The y-intercept Graphing Intercepts: 2x-4y=8 Step 1:You find the x-intercpet and replace the y-intercept with 0 and solve for the x-intercept. 2x-4y=8 2x-4(0)=8 2x-0=8 2x=8 x=4 Step 2:You find the y-intercpet and replace the x-intercept with 0 and solve for the y-intercept. 2x-4y=8 2(0)-4y=8 0-4y=8 -4y=8 y=-2 The x=4;The y=-2 Step 3:Since they're from different equations we can't combine them.Since the 0's were used as replacements for the opposing variables we will use them in their ordered pairs. Keep in mind that the ordered pairs have to look like this (x,y) For the first equation the oredered pair would be (4,0) For the second equation the orderd pair would be (0,-2) Step4:Plot the ordered pairs. [|The plotted ordered pairs.]