Hello...could someone help me out?? ty :)
2 answers:
Answer:
A
Step-by-step explanation:
Always start by finding the slope when you're given two points! (This means that we can rule out C and D.) The equation for slope is
You can remember this by thinking about it being <u>rise over run,</u> or the distance you go up or down divided by the distance you go across. This means that answer choices B and D are incorrect.
Next, what do we plug into slope-intercept form to get the y-intercept? The slope, and one other point.
y = mx+b
You can see that if we were to plug in m, x, and y, we'd only have b left, and we could solve!
<u>This means that choice A is correct.</u>
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Answer:
first option
Step-by-step explanation:
Given
f(x) = ← factorise the numerator
= ← cancel (x + 4) on numerator/ denominator
= 2x - 3
Cancelling (x + 4) creates a discontinuity ( a hole ) at x + 4 = 0, that is
x = - 4
Substitute x = - 4 into the simplified f(x) for y- coordinate
f(- 4) = 2(- 4) - 3 = - 8 - 3 = - 11
The discontinuity occurs at (- 4, - 11 )
To obtain the zero let f(x) = 0, that is
2x - 3 = 0 ⇒ 2x = 3 ⇒ x =
There is a zero at ( , 0 )
Thus
discontinuity at (- 4, - 11 ), zero at ( , 0 )