a) True. Plug in x = 0 and it leads to y = c. Therefore, the point (0,c) is on the parabola.
b) False. Plug in y = 0 and apply the quadratic formula. One x intercept may sometimes be x = c, but it could easily be other values as well. Or perhaps you may not get any real number solutions at all. See part d) below.
c) True. If a < 0, then the leading coefficient is negative. Overall, both endpoints will tend toward negative infinity to produce a parabola that opens downward.
d) False. The quadratic may have one x intercept or it may not have any x intercepts at all. It depends on what the discriminant d = b^2 - 4ac is equal to. If d < 0, then we have no x intercepts. If d = 0, then we have exactly 1 x intercept. If d > 0, then we have two different x intercepts.
e) True. The vertex's x coordinate is -b/(2a). If b = 0, then the x coordinate of the vertex is 0. The vertical line x = 0 is directly on top of the y axis.

8 0

2 years ago

C/8 = - 12 please help fast

Brums [2.3K]

Answer:

x = -96

Step-by-step explanation:

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2 years ago

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Matsu wants to measure the dimensions of her vegetable garden. Which unit of measurement should she use to eliminate the need to

Sati [7]

The complete question is
Matsu wants to measure the dimensions of her vegetable garden. Which unit of measurement should she use to eliminate the need to write the values in scientific notation?
inches
feet
cups
tons

we know that

case a) inches
is a measure of length used for small dimensions

case b) feet
is a measure of length commonly used for dimensions of land, rooms, houses, etc.

case c) cups
is not a measure of length

case d) tons
is not a measure of length

therefore

the answer is the option
feet

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2 years ago

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