Answer:
Top left, bottom left, & bottom right are functions
Step-by-step explanation:
To be considered a function, you must have no repeating X variable. Column A represents X, Column B represents Y.
The top left and bottom left diagrams show the A numbers going to one single B number, there is no A number with two lines going to a B number.
The bottom right may have two lines going to a B number, but there is no A number with two lines, still making it a complete function.
Now for top right, in the A column, variable d clearly has 2 lines making it not a function.
Hope this makes sense! :)
A, because -0.4 is greater than -0.9. Try drawing it on a number line!
Alright, so we have
<span>-9x+6y=-30
</span><span>-12x+9y=-30
Although we might really want to say -9x+6y=-12x+9y, we can't do it that way. We have to get rid of a variable and go from there. Solving for y, we get
</span>-9x+6y=-30
Divide both sides by 3
-3x+2y=-10
Add 3x to both sides
2y=-10+3x
Divide both sides by 2
y=(-10+3x)/2
-12x+9y=-30
Divide both sides by 3
-4x+3y=-10
Add 4x to both sides
-10+4x=3y
Divide both sides by 3
(-10+4x)/3=y
Since we have
(-10+4x)/3=y and y=(-10+3x)/2 , we have
(-10+4x)/3=(-10+3x)/2
Since 3*2=6, we can multiply both sides by 6
-20+8x=-30+9x
Add 30 to both sides
10+8x=9x
Subtract 8x from both sides
x=10
Plug that in to any equation,and you should have your answer! Good luck, and ask if you have any questions!
Answer:
1 solution
Step-by-step explanation:
Answer: vertex (-1, 0) axis of symmetry -> x = -1
Step-by-step explanation:
f(x) =
to find the vertex do
x+1 = 0
to find the x value
x = -1
plug -1 into the equation
f(-1) =
f(-1) = 3(0)
f(-1) = 0
Therefore, the vertex is (-1, 0)
The axis of symmetry is
x = -1
because that is where the lowest x value is