Multply across the fraction so
1/2 * 3/4= (1*3)/(2*4)=3\8
1) y=-x+4, the slope is -1
2)y=-x+4, slope is -1
3) yes
4)It's the same line if the slopes and y-intercepts are the same, so the number of corresponding points are infinite.
82 tens in the same thing as 820 because if you multiply 82 by 10 you get 820
