Question

I really need help with this, please. Medal and fan

Answer 1

I don’t really know how to explain this, but I took the PERT test today and there were a few questions that I had trouble with. One of them was something like “find the y-intercept of the equation” (I’m missing some of the words but you kinda get it). The equations were something like 8(4y + 3) = -2 (I’m just using random numbers ‘cause I don’t remember the entire question). And the answer choices would be like y = 1/4x - ¾

If you have any idea as to what I’m talking about and could help me out, I would really appreciate it.

Answer 2

i believe that's a order of operation question

Answer 3

look up pemdas and you'll understand

Answer 4

I know about that but this is different

Answer 5

is the question " find the slope-intercept form of the equation" ?

Answer 6

I'm not totally sure. I don't remember seeing slope-intercept, but I definitely remember y-intercept.

Answer 7

if the question is find the y-intercept , the answer must be a number

to find the y-intercept of an equation, you set y=0 and solve for x

Answer 8

Damn I'm really not sure then. If you don't mind helping me with a different one

It was something like "find the y-intercept of a linear equation passing through the points (-3,-2) and (8,5)." Again, those were just random numbers.

@hoblos

Answer 9

this one is much clearer,

do you know how to find the equation of a line passing by 2 given points ?

Answer 10

Not really

Answer 11

to find the y-intercept we must find the equation of the line first,

to find the equation of the line we find the slope between the 2 points (x1,y1) (x2,y2)

\[m= \frac{ y_2 - y_1 }{ x_2 - x_1 } \]

then apply

\[y - y_1 = m(x - x_1)\]

Answer 12

Okay, I don't remember anything with an m (I know m is the slope, but I don't remember anything close to y−y1=m(x−x1))

Answer 13

this equation is used to find the equation of a line with slope m and passing by point (x1,y1)

Answer 14

Oh alright. What's next?

Answer 15

then you solve the equation for y

so that you get y = mx + b

Answer 16

Oh alright. Would you mind helping me with one more?

Answer 17

i'll try to

Answer 18

So basically, there was an equation with numbers, variables, and a fraction ( i think). Something like x -3 <4+y or something. The possible answers were all number lines like x is </= 5 or x is >/= 10 (idk if I’m doing that right, and sorry for doing an awful job explaining this)

Answer 19

what is the question for this one ?

Answer 20

I think it was like find x

Answer 21

are you sure that there were both x and y in the inequality ?
or just one variable ?

Answer 22

I'm more sure that it was find x than I am that y was in the equation, so we can just replace y

Answer 23

so it's most likely to have only x,
and since we have fractions it could be for example

\[\frac{ x - 5 }{ 3 } \le 2 \]

is it like this ?

Answer 24

Maybe but it was longer, and I'm not sure it had fractions. I've taken it twice, once it did (I think) and I don't think it did today. Sorry this is so difficult

Answer 25

if you can remember one of them, or as close as possible, so i can guide you through the steps that you must follow to solve it

Answer 26

I can't remember but don't worry about. Thanks a lot, I really appreciate your time.

Answer 27

glad to help :)
if you needed any help on other questions you can tag me and I'll try to help :)

Answer 28

Alright, thanks!