Answer: y = 10x - 100
Step-by-step explanation:
Find the slope using two points (18,80) and (19, 90)
90-80/19-18
The slope is 10.
y = 10x + b
to find b, the slope intercept, we can plug x and y values into the equation.
80 = 180 + b
b = -100
so the final equation is y = 10x - 100.
