Answer:
For this case, the first thing you should observe is that you have a different function in two distinct intervals.
We have then:
For [-10, 2]:
The linear function has a positive slope, therefore it grows and cuts the y-axis at the point (0, 5)
For [2, 10]:
We have a constant function whose equation is:
y = 5
Answer:
D. The graph crosses the y-axis at (0, 5), increasing from x = -10 to x = 2 and remaining constant from x = 2 to x = 10.
Step-by-step explanation:
Answer:
ummmm i think its A
Step-by-step explanation:
Answer:
22 + x = 43
Step-by-step explanation:
let x = vanessa's savings
22 + x = 43
Answer: 18 and 32
Step-by-step explanation: The first thing you want to do is create a system of equations.
Let's use x to represent one number and y to represent the other.
So, we know that x+y=50 and x-y=14.
We can manipulate the second equation, making it x=y+14 by adding y to both sides. Then, now that we have an equivalent to x, we can plug it into the first equation to solve for y.
(y+14)+y=50
2y+14=50
2y=36
y=18
x+18=50
x=50-18
x=32
x=32, y=18
If you know the rules, you don't actually have to graph these to check if they're perpendicular, parallel, or neither.
parallel slopes are the same
perpendicular slopes are the opposite reciprocals
"neither" slopes fall into neither category
you should still follow directions and graph them if your teacher expects it, but with that knowledge:
13. y = 4x+7 and y = (-1/4)x-3
the slopes here, 4 and -1/4, are opposite reciprocals, so these lines are perpendicular
14. y = 3x-4 and y = 3x+1
the slopes here, 3 and 3, are the same, so these lines are parallel
15. y = x+5 and y = -5x-1
the slopes here, 1 and -5, have no relation in this case, so these lines are neither
