Answer:
-8=2x-y get this into y=mx+b form to find the y-intercept
-y=-2x-8
y=2x+8
the y-intercept is 8 so it passes through (0,8)
to find the x-intercept, set y to equal zero
0=2x+8
-8=2x
x=-4
the x-intercept is -4 so it passes through (-4,0)
the slope is 2 based on the slope-intercept form
Let x = the length of a side of the square (m).
The area is
A = x²
The perimeter is
P = 4x
The rate of change of P with respect to x is
P'(x) = 4 (independent of x)
When A = 49 m², then x = 7 m.
The rate of P is 4.
Answer: 4
There are no choices but when graphed the parabola will look like an upside-down "U". like this: ∩
Answer:
46/3 or 15.3
Step-by-step explanation:
After rounding to the nearest integer, we have:
3(x - 7) = 25.
Dividing both sides by 3, to isolate (x - 7), we get x - 7 = 25/3.
Adding 7 to both sides, we get x = 25/3 + 7, or x = 25/3 + 21/3, or x = 46/3. This is 15 1/3, which is closest to the last given possible answer (15.3).
