True hhhhhhhhhhhhhhhhhhhhhhhhhhhhh
The domain of the first one is -3,-1,0,2,7. The range is -7,-3,-1,3,7.
For the second, the domain is -5,-4,0,1,2. The range is -4,2,2,3,4.
Domain is just the x-values
Range is just the y-values
Are you really having trouble counting the blocks ? It shouldn't be
a problem, because you can <em>see</em> all of them in the picture. There are
no blocks hiding behind other ones.
There are 5 blocks in the bottom row, sitting on the table, and
4 more stacked on top of them . . . total of 9 blocks.
Judging by the question at hand I generated this equation.
x+y=12
x=2y
I begin this question by plugging in the x=2y into the equation for x.
So the new equation should be 3y=12. I then divide the entire equation by 3 to get y=4.
Next I plug y=4 into the equation, the new equation should be x+4=12. I then subtract 4 from both sides to get x=8.
The two numbers are :
x=8 y=4