Determine the equation of a line: a) that goes through (-1,2) and (7,2)

b) parallel to x=5

c) that is vertical and goes through (-5,6)

d) perpendicular to
y= -3/5x + 14, y-intercept 8

e) perpendicular to x=-2

f) parallel to y = 3/4x + 1 and goes through the origin

g) that is horizontal and goes through (-1,3)

h) that goes through (9,4) and (9,-3)

what does x eaqual

step-by-step explanation:

.25

step-by-step explanation:

7

step-by-step explanation:

the answer would be 7

step-by-step explanation: so we look at the formula un = a + (n-1)d

un is the amount of seats

n is the nth term aka row number

a is the original sequence/row number

d is the difference between each term

so in this a=22 d=6 and n can remain as n because we are simply formjng a rule

lets put these in the equation

un=22+(n-1)(6)

this is your answer to part a

however

lets double check that this is correct, we'll try putting it into the second term

un=a+(n-1)d

u2=22+(2-1)(6)

u2=22+6

u2=28

as the question said the second row has 28 seats so now we know the formula we made is correct.

as for part b

un=a+(n-1)

its asking us to find a row with 100 seats.

remember un was the amount of seata so all we do is substitute this in.

un=100 a=22 d=6

un=a+(n-1)d

100=22+(n-1)(6)

so now we simplify to find n which is the row number.

100-22=22+(n-1)(6)-22

78=(n-1)(6)

78/6=(n-1)(6)/6

13=n-1

13+1=n-1+1

14=n

so now we know that in the 14th row there is 100 seats.

hope this and that you understood! its my first time using the app or anyone out on here : p its also me to revise so a bunch! ask more questions if you dont understand ☺