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Alexxx [7]
3 years ago
14

Determine the y-intercept of the following parabola: y = (x - 3)(x + 7)

Mathematics
2 answers:
NARA [144]3 years ago
7 0

Answer:

Step-by-step explanation:

For any function, its y-intercept will be the y value when x = 0.

You can simply plug in 0 for x in the function:

y = (0-3)(0+7)

  = (-3)(7)

  = -21

Therefore, the y-intercept of this parabola is -21.

Fofino [41]3 years ago
4 0

Answer:

The y intercept is -21

Step-by-step explanation:

y = (x - 3)(x + 7)

To find the y intercept, set x =0 and solve for y

y = (0-3) (x+7)

y = -3*7

y = -21

The y intercept is -21

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Answer:

The correct option is a=5, b = -4, c=7 ....

Step-by-step explanation:

The standard form is ax²+bx+c=0

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The given expression is:

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To make it a standard equation we will move all the values to the left hand side and 0 will be left at the right hand side.

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Now solve the like terms and arrange the equation according to the standard form:

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Here a = 5

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c= 7

Thus the correct option is a=5, b = -4, c=7 ....

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