Answer:
Machine B
Step-by-step explanation:
Since, Machine A covers 
square feet in 
hours,
Rate at which the Machine A is covering = 
= 
= 2.5 square feet per hour
Machine B covers 
square feet in 
hours,
Rate at which the Machine B is covering = 
= 
= 
= 3.33 square feet per hour
Therefore, Rate of Machine B is greater.
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
Answer:
y = 
x - 1
Step-by-step explanation:
5x + 2y = 12
2y = -5x + 12
y = x + 6
y = mx + b
4 = ( -2 ) + b
4 = 5 + b
b = -1
y = x - 1
