im soo confused what im even calculating rn there isn’t enough information given
#plz help!
proud apex
serene pierBOT
prisma geyser
im soo confused what im even calculating rn there isn’t enough information given
one box equals one unit
proud apex
but wouldnt it be calculating the points (line to line) like usual
prisma geyser
but wouldnt it be calculating the points (line to line) like usual
we know one root
and the y-intercept
proud apex
i dont get how the zeros would be calculated
prisma geyser
i am trying to first determine the function
vague stratus
i am trying to first determine the function
Do you need the function? The question parts can be read off the graph by using the grid lines.
prisma geyser
Do you need the function? The question parts can be read off the graph by using ...
well the can you read the second root or the optimal point?
it's looks inaccurate thats why
vague stratus
if each box is 1x1, then it's just a matter of counting
proud apex
okay
prisma geyser
if each box is 1x1, then it's just a matter of counting
the second zero looks approximated -1.6 or so but this is not the most precise
proud apex
would the optimal value be 13? or does that not make sense
prisma geyser
would the optimal value be 13? or does that not make sense
how
proud apex
idek because im counting the tiles all the way to the top
prisma geyser
the optimal value would be y = 7 and something
proud apex
ohh wait yes
prisma geyser
and x = 1.5 approximated
proud apex
okay thank u sm
proud apex
the optimal value would be y = 7 and something
wouldnt it be negative?
proud apex
idk because the 5 is positive so would that make whatever is on top negatives?
prisma geyser
i dont understand
vague stratus
This is the closest I can get with producing graph from the formula. adonhs is right, this thing's off a bit from the grid-lines. Counting requires guessing. Getting the formula took a system of 3 equations with 3 unknowns using 3 points read off the plot.
Worse, the axes don't math up with the grid. I wonder how precise the answers are expected to be for this problem.
And if I hit the 3 obvious points, I still miss the x-intercept on the left.
prisma geyser
This is the closest I can get with producing graph from the formula. adonhs is r...
precisely my point thanks
A(1,7)
B(2,7)
C(5,0)
y = ax²+bx+c
a < 0
(1) 7 = a + b + c
(2) 7 = 4a + 2b + c
(3) 0 = 25a + 5b + c
Then we get a = -7/12, b = 7/4, c = 35/6
,w plot (-7/12)x^2 +(7/4)x + 35/6
sonic treeBOT
vague stratus
with grid lines...
prisma geyser
i mean since the coordinate system and parabola looks off it could be or not
anyway teachers like that should get suspended
can't even provide proper material resulting to the students wasting their time with confusion
vague stratus
the symmetry line's at x = 1.5. That's 3.5 units from x = 5. Go 3.5 units to left of 1.5 for other x-intercept and land on -2. The given parabola doesn't seem to match a true parabola 😦
prisma geyser
the symmetry line's at x = 1.5. That's 3.5 units from x = 5. Go 3.5 units to lef...
wdym
vague stratus
If {5, 0} is one x-intercept, the other should be {-2, 0}. But the pic hits x-axis between -2 and -1
prisma geyser
If {5, 0} is one x-intercept, the other should be {-2, 0}. But the pic hits x-ax...
yea this is what I meant by the parabola being with the coordinate system off
like they were moved
vague stratus
that's a bad graph.
prisma geyser
the symmetry line's at x = 1.5. That's 3.5 units from x = 5. Go 3.5 units to lef...
yea u r right
vague stratus
what's a student to do with a problem like this?
I'm tempted to just make my own parabola, solve that, and go given problem had errors. I can do this, here, I'll show you. And move on.
prisma geyser
what's a student to do with a problem like this?
I'm tempted to just make my ow...
you can also go outside