Question

@texaschic101 Help?!

Answer 1

For number 22, the functions have the same shape, so it would definitely be A or D. The only difference between A and D is what it states the y-intercept of the second function to be. What does it look like the y-intercept of the second function is?

Answer 2

The answer would be D, right?

Answer 3

I am not really good with functions, but I can tell by looking at the graph, y intercept of function A is 0 and y intercept of function B is -5......So I am thinking the first question's answer is the last answer.
As for the second question.... x intercept is 5....so I am going to say it is the last answer choice

Answer 4

Yes. The y-intercept of the second function is -5, so it would be D.

Answer 5

okay! thank you!

Answer 6

:)

Answer 7

:) You welcome.

Answer 8

What do you guys know about these?

Answer 9

This is a review for a test I will take this week and I want to make sure I'm getting them right!

Answer 10

For Number 20, in order to tell if two lines are perpendicular, parallel, or neither, you would have to look at their slopes. The first equation is already in slope-intercept form, so you would only have to convert the second equation into slope-intercept form.\[-2x+10y=5 \\ 10y = 5 + 2x \\ y = \frac{1}{5}x + .5\]
So, the slope is found in front of the x, so for the first equation, the slope is -1/5, and for the second equation, the slope is 1/5. For them to be parallel, the slopes would have to be the same, which is not true. For them to be perpendicular, they would have to be negative reciprocals, which is also not true. So, the two lines are neither.

Answer 11

parallel lines have the same slope. Perpendicular line have negative reciprocal slopes...all that means is " flip " the slope and change the sign. If you had a slope of -2. the negative reciprocal is 1/2 (see how I flipped the slope and changed the sign.

Answer 12

For Number 21, like I said before, for them to be perpendicular, the slopes have to be negative reciprocals, so 7/3 would turn into -3/7. Then you would plug the point into the formula, y - y1 = m(x - x1). The slope is -3/7, so the equation would turn into y - y1 = -3/7(x - x1). The y-coordinate is 9 and the x-coordinate is -4, so the equation would turn into y - 9 = -3/7(x - (-4)), or y - 9 = -3/7(x + 4). So, it would be C.

Answer 13

its starting to make sense, I don't know why I have so much trouble with slopes. I think I read too much into it. lol

Answer 14

Slope equation is:\[\frac{y - y _{1}}{x - x _{1}}\]Take two of the points on the line, for example: (2,0) and (2,1).\[\frac{1 - 0}{2 - 2}=\frac{1}{0}\] Division by 0 is always undefined, so the answer is C. undefined.

Answer 15

Thank you so much!!

Answer 16

You welcome. :)