Answer:
y = 7x - 2
Step-by-step explanation:
first we need the slope of the line.
the slope is expressed a the ratio (y coordinate change / x coordinate change) when we go from one point on the line to another.
so, let's say we go from (0, -2) to (1, 5), we see
x changes by +1 (from 0 to 1).
y changes by +7 (from -2 to 5)
so the slope is +7/+1 = 7
the slope-intercept form is in general
y = ax + b
a being the slope, b being the y-intercept (the y-value for x = 0).
the point (0, -2) gives us therefore the y-intercept directly : -2.
by using the already established slope and the point (0, -2) for the y-intercept the equation of our line is
y = 7x - 2
N= (3/2) / (1/4) = (3/2) x (4/1) = 6
'divided by a' is 'multiplied by 1/a' when a is not zero.
Answer:
t = cost of a ticket
4t+55
Step-by-step explanation:
Cost 1
4 airline tickets
Let t = cost of a ticket
4*t
Cost 2
extra baggage fee
55
Add the costs together
4t+55
8 hours because...
864 576
---- = ----
12 x
6912=12x
x=8
4(8 + 3x)
4(8) + 4(3x)
32 + 12x
