Answer:
PIC 1: Option 2. this relation is a function
PIC 2. Option 1. this relation is not a function
Step-by-step explanation:
To be a function, the domain (x value) can only have one range (y value). But one range can have multiple domain
PIC 1
Function {(-2, -4) (-1, -4) (3, -4) (6, -4)}
This relation is a function
EXPLANATION: each domain only have one range
PIC 2
Function {(-4, -2) (-4, -1) (-4, 3) (-4, 6)}
This relation is not a function
EXPLANATION: each domain has multiple range.
Hope this helps!! :)
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Question
what does x = ?
please please help
5x(2x+20)= 90
10x=90-20
10x=70
x=70/10
x=7
plz give brainliest +thanks
Answer:
difficult Dino x shock so zero shock still is romp
Given :
The foci of hyperbola are (8,0) and (-8,0) .
The difference of the focal radii = 6.
To Find :
The equation of the hyperbola.
Solution :
We know, distance between foci is given by :
2c = 8 - (-8)
c = 8
Also, difference between the foci or focal distance is given by :
2a = 6
a = 3
Now, we know for hyperbola :
General equation of hyperbola is :
Hence, this is the required solution.
Answer:
y=-3/2x+6
Step-by-step explanation:
You can find the slope by taking two points on the graph, and making the one that occurs earlier in the graph (from left to right) the first point (x1, y1) and the one that occurs later in the graph the second point (x2, y2). The equation is m (or slope)=(y2-y1)/(x2-x1). I took the first two points in the table for this. m=(12-18)/-4-(-8)
the double negative on the bottom becomes an addition=> (12-18)/(-4+8)
the top simplifies to be -6 and the bottom simplifies to 4=>-6/4
this fraction can be reduced to -3/2, which is the slope of the graph.
Now, use point slope form (y-y1=m(x-x1)) to find the equation of the graph. Plug any coordinate on the graph in for x1 and y1 here. It should be correct as long as it is a point on the graph, but I am using the point (-8, 18) here.
=>y-18=-3/2(x-(-8))
the double negative in the parentheses becomes a positive=> y-18=-3/2(x+8)
distribute the -3/2 to every term in the parentheses=> y-18=-3/2x-12
add 18 to both sides, cancelling out the -18 on the left side of the equation=>y=-3/2x+6 (-12+18=6 to get 6 for b).
Therefore, the equation is y=-3/2x+6
