Is each statement below a good definition? If not, explain. 15. Two rays intersect if and only if they lie in the same plane.
16. A redwood tree is an evergreen tree that grows very tall.
17. A rectangle is a quadrilateral with four congruent angles.
18. A hexagon is a polygon with exactly six sides.

step-by-step explanation:

let

we know that

the y-intercept is the y-coordinate of the point when the value of x is equal to zero

so

the y-coordinate of the point a is the y-intercept

the answer part a) is

the value of y-intercept is

part b) find the slope m

we know that

the value of the slope is equal to

substitute the values

therefore

the answer part b) is

the value of the slope is equal to

the general answer is

the slope is

the value of y-intercept is

27

step-by-step explanation:

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step-by-step explanation: