Answer:
y=-2/5x+1
y=x+1
y=249/10
y=23
y=x+5
Step-by-step explanation:
Let's solve for x.
y=x+5
Step 1: Flip the equation.
x+5=y
Step 2: Add -5 to both sides.
x+5+−5=y+−5
x=y−5
Answer:
x=y−5
Answer: 65 = x + 2
x = 63 inches
Step-by-step explanation:
Answer:
only some are possible for example
2x2 plus 2
3x3 minus 3
6x6 divided by 6
thoes are the only ones
Answer: i think its 3
Step-by-step explanation:
Answer: choice D) 20
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Explanation:
Locate 3 on the x axis number line. Draw a vertical line through 3 and this vertical line will cross the parabola at some point P. Mark this point P on the parabola. Then draw a horizontal line from P to the y axis. The horizontal line will land on y = 10. In short, this all shows us that (3,10) is a point on this parabola.
Repeat those steps above, but now for x = 7. You'll see that (7,90) is another point on this parabola.
We need to find the slope of the line through the two points (3,10) and (7,90). The average rate of change from x = 3 to x = 7 is the same as the slope of the line through those two points.
To find the slope, we use the slope formula
m = (y2 - y1)/(x2 - x1)
where (x1,y1) and (x2,y2) are the two points, and m is the slope
In this case,
(x1,y1) = (3,10) and (x2,y2) = (7,90)
further breaking down to
x1=3
y1=10
x2=7
y2=90
So we'll plug those four pieces of info into the equation and simplifying to get...
m = (y2 - y1)/(x2 - x1)
m = (90 - 10)/(7 - 3)
m = 80/4
m = 20
The slope of the line is 20, so therefore, the average rate of change is 20.
