Answer:
√308 or 17.5
Step-by-step explanation:
c^2=a^2+b^2
c^2-a^2=b^2
Substitute
18^2-4^2=b^2
324-16=b^2
b^2=308
b=√308 or b=17.5
 
        
             
        
        
        
Answer:
y = -2x + 12
Step-by-step explanation:
Step 1: find the slope
y = 1/2x + 5
The equation of the line is
y = mx + c
m - slope
m = 1/2
Note : if two lines are perpendicular to the other, both lines are negative reciprocal of each other
m = -2
Step 2 : using a point slope form
y - y1 = m( x - x1)
( 2 , 5)
x1 = 2
y1 = 5
y - 2 = -2( x - 5)
y - 2 = -2x + 10
y = -2x + 10 + 2
y = -2x + 12
The equation of the line is
y = -2x + 12
I dunno the answer so I just found another answer I found in here for this question:P
Sorry- it’s useless 
 
        
             
        
        
        
• Given the table of values, you can identify these points:

If you plot them on a Coordinate Plane, you get:
As you can observe, it is a Linear Function.
• The equation of a line in Slope-Intercept Form is:

Where "m" is the slope of the line and "b" is the y-intercept.
In this case, you can identify in the graph that:

Therefore, you can substitute that value and the coordinates of one of the points on the line, into this equation: 

And then solve for "m", in order to find the slope of the line.
Using this point:

You get:

Therefore, the equation for the data in Slope-Intercept Form is:

Hence, the answer is:
• It represents a Linear Function.
,
• Equation:
 
 
        
             
        
        
        
x=-3, y=1
Step-by-step explanation:
Given equations are:
2x-3y=-9     Eqn 1
x+y = - 2      Eqn 2
From eqn 2:

Putting x=-y-2 in eqn 1

Hence,
x=-3, y=1
Keywords: Linear equations, Variables
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