Answer: the last one
Step-by-step explanation:
Answer:
y = 10x +
the picture is cut short so I can't help with the next box.
Since the midpoint lies on the axis, both ends are therefore equidistant from the axis and are mirrors of each other so..
Q = (4,9)
Answer:
1 equation) make a point on the y axis at (0,4) then draw a horizontal line.
2 equation) make a point on the y axis at (0,3) then count up 1 from the point and to the left one, and continue until you have as many points as you need.
Step-by-step explanation:
For the first equation you would simplify the problem first. Since -7+3 is -4 the first equation is y=-4
For the second equation the problem is already simplified so you would just graph.
Answer:
36.5
Step-by-step explanation:
y= -x²+73x-520
which can be represented as ax²+bx+c
a= -1, b= 73, c = -520
for maximum value of y,
the formula is
c - (b² / 4a)
= -520 - (73² / 4×(-1))
= -520 - (5329 / -4)
= -520 + 1332.25
= 812.25
Solving for x,
812.25 = -x²+73x-520
or, x²-73x+ 1332.25 = 0
Solving,
x= 36.5
