Answer: 3x
Step-by-step explanation:
 
        
             
        
        
        
Answer:
A
Step-by-step explanation:
To evaluate f(2), substitute x = 2 into f(x), that is
f(2) = 2(2)² - 5(2) = 2(4) - 10 = 8 - 10 = - 2 → A
 
        
                    
             
        
        
        
Answer:
7/20
Step-by-step explanation:
Since y varies directly with x, the ratio of y to x is proportional.
... y / 7 = (1/4)/(5)
... y / 7 = 1 / 20 . . . . simplify
... y = 7/20 . . . . . multiply by 7
 
        
             
        
        
        
You need to go from slope-intercept (

) to standard form (

).    
slope-intercept form of your provided values:  
 
  now, solve for x and y  
 Your answer is
    Your answer is 
.
 
        
        
        
<span>In this formula :
</span><span>y </span>tells us how far up the line goes
<span>x </span>tells us how far along
<span>m </span>is the Slope or Gradient i.e. how steep the line is
<span>b </span>is the Y-intercept i.e. where the line crosses the Y axis
The X and Y intercepts and the Slope are called the<span> line properties.</span><span> We shall now graph the line </span><span> 3x+2y-62  = 0</span><span> and calculate its properties
</span>
Notice that when x = 0 the value of y is 31/1 so this line "cuts" the y axis at y=31.00000
<span>  y-intercept = 62/2 = 31 
</span>
When y = 0 the value of x is 62/3 Our line therefore "cuts" the x axis at x=20.66667
<span>  x-intercept = 62/3 = 20.66667
</span>
Slope is defined as the change in y divided by the change in x. We note that for x=0, the value of y is 31.000 and for x=2.000, the value of y is 28.000. So, for a change of 2.000 in x (The change in x is sometimes referred to as "RUN") we get a change of 28.000 - 31.000 = -3.000 in y. (The change in y is sometimes referred to as "RISE" and the Slope is m = RISE / RUN)
<span>  Slope = -3.000/2.000 = -1.500 
</span><span>
1.Slope = -3.000/2.000 = -1.500  
2.x-intercept = 62/3 = 20.66667<span>  
3.y-intercept = 62/2 = 31
I got sources from a few websites so excuse if something is weird/wrong.  
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