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