The graduation rate of a local high school is growing at a rate which can be estimated by the following linear model, where y represents the graduation rate, as a percentage, x years after 2017.
y = 74.18 + 1.57x
Use the model to predict the first year in which the school will exceed a 90% graduation rate.

f

step-by-step explanation:

f

triangle abc is reflected on the line x=-6.5 then reflected again on the x axis

step-by-step explanation:

y = 5x + 17

step-by-step explanation:

a perpendicular line will be the opposite reciprocal slope of the given equation.   the slope given is -1/5 so the opposite reciprocal is 5

find b:

7 = 5 (-2) + b

7 = -10 + b

17 = b

write equation

y = 5x + 17