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Serjik [45]
3 years ago
8

The vertex of a parabola is in the first quadrant of a coordinate grid. A line with a negative slope passes through the origin.

If the parabola and line intersect at the origin, which statement must be true?
a. The parabola opens downward.
b. The parabola opens upward.
c. The slope of the line is equal to –1.
d. The slope of the line is not equal to –1.
Mathematics
2 answers:
Gnom [1K]3 years ago
8 0

Answer:

c

Step-by-step explanation:

your welcome

Ivenika [448]3 years ago
4 0

Answer:

A) The parabola opens downward.

Step-by-step explanation:

Right on Edge2020

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Step-by-step explanation:

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irina [24]

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If y=8 when x =3, find y when x=45
Art [367]
Let's make things easier by simplifying things.

y = 8 and x = 3 is more likely to be understood as a ratio. So for the rest of the answer, their relationship would be represented as y:x

Thus: y:x = 8:3

The problem would be finding y when x = 45

Let us proceed on using the previous equation and substitute x with 45 which would look like this:

y:45 = 8:3

Ratios can also be expressed as fractions which would make things more understandable and easy to solve. So the new form of our equation would be like this:

y/45 = 8/3

Then we proceed with a cross multiplication where the equation becomes like as what is shown below:

3y = 45 * 8

From there, you can solve it by multiplying 45 and 8 then dividing the product with 3 to get y

3y = 360

y = 120

Another way of looking at the problem, especially problems like these, is to take the whole question or statement as an equation. it would probably look like this:

y = 8 when x = 3 : y = ? when x = 45

This would make you understand what approach you can use to solve the given problem.
5 0
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Find the slope of the line through (-9,-10) and (-2,-5)
valentina_108 [34]
Slope = Change in y direction / Change in x direction

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5 0
3 years ago
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