Show that f(x) = 9x - 2 is a one-to-one function.
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upon graphing, it is linear

Step-by-step explanation:

you could set up an x-y table or you could graph it

if you graph it you'll see it's linear with a y-intercept of -2 and a slope of 9

all linear equations are functions except for vertical lines

lockers 1, 4, 9, 16, 25, 40, and 49 are open

i ran through it by the other answer is wrong