First thing to do is to solve each of these for y. The first one is y=-4x-3; the second one is y=4x-21; the third one is y=4x+21; the fourth one is y=-4x+3. From that you can tell the positive slopes are found in the second and third equations. Those are the ones we will test now for the point (3, -9). y=-9 and x=3, so let's fill in accordingly. The second equation filled in is -9=4(3)-21. Does the left side equal the right when we do the math? -9=12-21 and -9=-9. So the second one works. Just for the sake of completion, let's do the same with the third: -9=4(3)+21. Does -9=12+21? Of course it doesn't. Our equation is the second one above, y+9=4(x-3).
Answer:
a) see graph
b) No
Step-by-step explanation:
The given relation is
{
}
The arrow diagram is shown in the attachment.
b) The relation is not a function because -2 alone maps onto two different y-values.
One-to-many relation cannot be a function.
Answer:
i think its 7/4
Step-by-step explanation:
The range is the all values of y.
Because this is line segment , the values of y will change linearly, so
the range is going to be y=[2,5]
0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5. 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5
